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) Two boys can finish a work in 8 days when they work together.The first boy can do it alone in 9 days will the second boy do it all by himself days Answer:_______________ |
| 2) Two boys can finish a work in 4 days when they work together.The first boy can do it alone in 5 days will the second boy do it all by himself days Answer:_______________ |
| 3) Two boys can finish a work in 2 days when they work together.The first boy can do it alone in 3 days will the second boy do it all by himself days Answer:_______________ |
| 4) Two boys can finish a work in 5 days when they work together.The first boy can do it alone in 6 days will the second boy do it all by himself days Answer:_______________ |
| 5) Two boys can finish a work in 7 days when they work together.The first boy can do it alone in 8 days will the second boy do it all by himself days Answer:_______________ |
| 6) Two boys can finish a work in 6 days when they work together.The first boy can do it alone in 7 days will the second boy do it all by himself days Answer:_______________ |
| 7) Two boys can finish a work in 3 days when they work together.The first boy can do it alone in 4 days will the second boy do it all by himself days Answer:_______________ |
| 8) Two boys can finish a work in 4 days when they work together.The first boy can do it alone in 5 days will the second boy do it all by himself days Answer:_______________ |
| 9) Two boys can finish a work in 6 days when they work together.The first boy can do it alone in 7 days will the second boy do it all by himself days Answer:_______________ |
| 10) Two boys can finish a work in 3 days when they work together.The first boy can do it alone in 4 days will the second boy do it all by himself days Answer:_______________ |
| 1) Two boys can finish a work in 8 days when they work together.The first boy can do it alone in 9 days will the second boy do it all by himself Answer: 72days SOLUTION 1 : Given : Two boys can finish a work =8 days Workdone by both the boys together in 1 day = The first boy finish the work = 9 days workdone by the first boy in 1 day = workdone by a second boy in 1 day = - = [(1 x 9) - (1 x 8)] / (8 x 9) = (9 =
= / 72) =72days second boy finished a work in day = 72 |
| 2) Two boys can finish a work in 4 days when they work together.The first boy can do it alone in 5 days will the second boy do it all by himself Answer: 20days SOLUTION 1 : Given : Two boys can finish a work =4 days Workdone by both the boys together in 1 day = The first boy finish the work = 5 days workdone by the first boy in 1 day = workdone by a second boy in 1 day = - = [(1 x 5) - (1 x 4)] / (4 x 5) = (5 =
= / 20) =20days second boy finished a work in day = 20 |
| 3) Two boys can finish a work in 2 days when they work together.The first boy can do it alone in 3 days will the second boy do it all by himself Answer: 6days SOLUTION 1 : Given : Two boys can finish a work =2 days Workdone by both the boys together in 1 day = The first boy finish the work = 3 days workdone by the first boy in 1 day = workdone by a second boy in 1 day = - = [(1 x 3) - (1 x 2)] / (2 x 3) = (3 =
= / 6) =6days second boy finished a work in day = 6 |
| 4) Two boys can finish a work in 5 days when they work together.The first boy can do it alone in 6 days will the second boy do it all by himself Answer: 30days SOLUTION 1 : Given : Two boys can finish a work =5 days Workdone by both the boys together in 1 day = The first boy finish the work = 6 days workdone by the first boy in 1 day = workdone by a second boy in 1 day = - = [(1 x 6) - (1 x 5)] / (5 x 6) = (6 =
= / 30) =30days second boy finished a work in day = 30 |
| 5) Two boys can finish a work in 7 days when they work together.The first boy can do it alone in 8 days will the second boy do it all by himself Answer: 56days SOLUTION 1 : Given : Two boys can finish a work =7 days Workdone by both the boys together in 1 day = The first boy finish the work = 8 days workdone by the first boy in 1 day = workdone by a second boy in 1 day = - = [(1 x 8) - (1 x 7)] / (7 x 8) = (8 =
= / 56) =56days second boy finished a work in day = 56 |
| 6) Two boys can finish a work in 6 days when they work together.The first boy can do it alone in 7 days will the second boy do it all by himself Answer: 42days SOLUTION 1 : Given : Two boys can finish a work =6 days Workdone by both the boys together in 1 day = The first boy finish the work = 7 days workdone by the first boy in 1 day = workdone by a second boy in 1 day = - = [(1 x 7) - (1 x 6)] / (6 x 7) = (7 =
= / 42) =42days second boy finished a work in day = 42 |
| 7) Two boys can finish a work in 3 days when they work together.The first boy can do it alone in 4 days will the second boy do it all by himself Answer: 12days SOLUTION 1 : Given : Two boys can finish a work =3 days Workdone by both the boys together in 1 day = The first boy finish the work = 4 days workdone by the first boy in 1 day = workdone by a second boy in 1 day = - = [(1 x 4) - (1 x 3)] / (3 x 4) = (4 =
= / 12) =12days second boy finished a work in day = 12 |
| 8) Two boys can finish a work in 4 days when they work together.The first boy can do it alone in 5 days will the second boy do it all by himself Answer: 20days SOLUTION 1 : Given : Two boys can finish a work =4 days Workdone by both the boys together in 1 day = The first boy finish the work = 5 days workdone by the first boy in 1 day = workdone by a second boy in 1 day = - = [(1 x 5) - (1 x 4)] / (4 x 5) = (5 =
= / 20) =20days second boy finished a work in day = 20 |
| 9) Two boys can finish a work in 6 days when they work together.The first boy can do it alone in 7 days will the second boy do it all by himself Answer: 42days SOLUTION 1 : Given : Two boys can finish a work =6 days Workdone by both the boys together in 1 day = The first boy finish the work = 7 days workdone by the first boy in 1 day = workdone by a second boy in 1 day = - = [(1 x 7) - (1 x 6)] / (6 x 7) = (7 =
= / 42) =42days second boy finished a work in day = 42 |
| 10) Two boys can finish a work in 3 days when they work together.The first boy can do it alone in 4 days will the second boy do it all by himself Answer: 12days SOLUTION 1 : Given : Two boys can finish a work =3 days Workdone by both the boys together in 1 day = The first boy finish the work = 4 days workdone by the first boy in 1 day = workdone by a second boy in 1 day = - = [(1 x 4) - (1 x 3)] / (3 x 4) = (4 =
= / 12) =12days second boy finished a work in day = 12 |