Scroll:Life mathematics >> profit and loss >> saq (4314)

Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.


 

1)  

 Poovazhagi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




2)  

 Poongodi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




3)  

 Indra invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




4)  

 Chithra invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




5)  

 Panimalar invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




6)  

 Tulasi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




7)  

 Selvanayaki invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




8)  

 Pavi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




9)  

 Parveen invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




10)  

 Tamilselvi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'


Answer:_______________




 

1)  

 Poovazhagi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



2)  

 Poongodi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



3)  

 Indra invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



4)  

 Chithra invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



5)  

 Panimalar invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



6)  

 Tulasi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



7)  

 Selvanayaki invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



8)  

 Pavi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



9)  

 Parveen invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2

 



10)  

 Tamilselvi invested a sum of 12000 at 5% p.a. at compound interest.she received on amount of 13230 after n years. find the value of 'n'

Answer: 2


SOLUTION 1 :

     P     =     12000

     r       =    5%

     A      =    13230

      n     =  

 W.K.T,

      A     =   P[ 1+(r100) ]n

     13230   =  12000[ 1+(5100) ]n   

                 =  12000[1+0.05]n

                 =   12000x (1.05)n

1323012000 = (1.05)n

   (1.1025)2    = (1.05)n

(1.05)2 = (1.05)n

Since the bases are same, equating the powers both the sides, We get, n = 2 years

n = 2