Sasi Math (Revised for 1024)

Scroll:Distance, Time and Speed >> Distance, Time & Speed >> ps (646)

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.

Karna and Mithra started driving from the same place but in opposite directions along a straight road.
After driving for 2h, they were 220 km apart. Karna’s average speed was 45 $\frac{km}{h.}$
What was Mithra’s driving speed
$\frac{km}{h}$

Answer:_______________

Sriram and Ramani started driving from the same place but in opposite directions along a straight road.
After driving for 3h, they were 300 km apart. Sriram’s average speed was 45 $\frac{km}{h.}$
What was Ramani’s driving speed
$\frac{km}{h}$

Answer:_______________

Karna and Thamarai started driving from the same place but in opposite directions along a straight road.
After driving for 4h, they were 400 km apart. Karna’s average speed was 45 $\frac{km}{h.}$
What was Thamarai’s driving speed
$\frac{km}{h}$

Answer:_______________

Selvan and Keerthi started driving from the same place but in opposite directions along a straight road.
After driving for 4h, they were 420 km apart. Selvan’s average speed was 60 $\frac{km}{h.}$
What was Keerthi’s driving speed
$\frac{km}{h}$

Answer:_______________

Narayanan and Amutha started driving from the same place but in opposite directions along a straight road.
After driving for 3h, they were 375 km apart. Narayanan’s average speed was 60 $\frac{km}{h.}$
What was Amutha’s driving speed
$\frac{km}{h}$

Answer:_______________

Narayanan and Keerthi started driving from the same place but in opposite directions along a straight road.
After driving for 2h, they were 240 km apart. Narayanan’s average speed was 55 $\frac{km}{h.}$
What was Keerthi’s driving speed
$\frac{km}{h}$

Answer:_______________

Anand and Amutha started driving from the same place but in opposite directions along a straight road.
After driving for 3h, they were 285 km apart. Anand’s average speed was 50 $\frac{km}{h.}$
What was Amutha’s driving speed
$\frac{km}{h}$

Answer:_______________

Sriram and Mithra started driving from the same place but in opposite directions along a straight road.
After driving for 3h, they were 345 km apart. Sriram’s average speed was 50 $\frac{km}{h.}$
What was Mithra’s driving speed
$\frac{km}{h}$

Answer:_______________

Kumar and Jeevini started driving from the same place but in opposite directions along a straight road.
After driving for 3h, they were 360 km apart. Kumar’s average speed was 60 $\frac{km}{h.}$
What was Jeevini’s driving speed
$\frac{km}{h}$

Answer:_______________

10)

Aravindh and Indra started driving from the same place but in opposite directions along a straight road.
After driving for 2h, they were 210 km apart. Aravindh’s average speed was 50 $\frac{km}{h.}$
What was Indra’s driving speed
$\frac{km}{h}$

Answer:_______________

SOLUTION 1 :

← Karna	Mithra →

Starting Point

Step 1:	Distance travelled by Karna after 2 hours	→	2 h x 45 $\frac{km}{h}$
		=	90 km

Step 2:	Distance travelled by Mithra after 2 hours	→	220 km - 90 km
		=	130 km

Step 3:	Mithra's speed	→	130 km ÷ 2 h
		=	65 $\frac{km}{h}$

SOLUTION 1 :

← Sriram	Ramani →

Starting Point

Step 1:	Distance travelled by Sriram after 3 hours	→	3 h x 45 $\frac{km}{h}$
		=	135 km

Step 2:	Distance travelled by Ramani after 3 hours	→	300 km - 135 km
		=	165 km

Step 3:	Ramani's speed	→	165 km ÷ 3 h
		=	55 $\frac{km}{h}$

SOLUTION 1 :

← Karna	Thamarai →

Starting Point

Step 1:	Distance travelled by Karna after 4 hours	→	4 h x 45 $\frac{km}{h}$
		=	180 km

Step 2:	Distance travelled by Thamarai after 4 hours	→	400 km - 180 km
		=	220 km

Step 3:	Thamarai's speed	→	220 km ÷ 4 h
		=	55 $\frac{km}{h}$

SOLUTION 1 :

← Selvan	Keerthi →

Starting Point

Step 1:	Distance travelled by Selvan after 4 hours	→	4 h x 60 $\frac{km}{h}$
		=	240 km

Step 2:	Distance travelled by Keerthi after 4 hours	→	420 km - 240 km
		=	180 km

Step 3:	Keerthi's speed	→	180 km ÷ 4 h
		=	45 $\frac{km}{h}$

SOLUTION 1 :

← Narayanan	Amutha →

Starting Point

Step 1:	Distance travelled by Narayanan after 3 hours	→	3 h x 60 $\frac{km}{h}$
		=	180 km

Step 2:	Distance travelled by Amutha after 3 hours	→	375 km - 180 km
		=	195 km

Step 3:	Amutha's speed	→	195 km ÷ 3 h
		=	65 $\frac{km}{h}$

SOLUTION 1 :

← Narayanan	Keerthi →

Starting Point

Step 1:	Distance travelled by Narayanan after 2 hours	→	2 h x 55 $\frac{km}{h}$
		=	110 km

Step 2:	Distance travelled by Keerthi after 2 hours	→	240 km - 110 km
		=	130 km

Step 3:	Keerthi's speed	→	130 km ÷ 2 h
		=	65 $\frac{km}{h}$

SOLUTION 1 :

← Anand	Amutha →

Starting Point

Step 1:	Distance travelled by Anand after 3 hours	→	3 h x 50 $\frac{km}{h}$
		=	150 km

Step 2:	Distance travelled by Amutha after 3 hours	→	285 km - 150 km
		=	135 km

Step 3:	Amutha's speed	→	135 km ÷ 3 h
		=	45 $\frac{km}{h}$

SOLUTION 1 :

← Sriram	Mithra →

Starting Point

Step 1:	Distance travelled by Sriram after 3 hours	→	3 h x 50 $\frac{km}{h}$
		=	150 km

Step 2:	Distance travelled by Mithra after 3 hours	→	345 km - 150 km
		=	195 km

Step 3:	Mithra's speed	→	195 km ÷ 3 h
		=	65 $\frac{km}{h}$

SOLUTION 1 :

← Kumar	Jeevini →

Starting Point

Step 1:	Distance travelled by Kumar after 3 hours	→	3 h x 60 $\frac{km}{h}$
		=	180 km

Step 2:	Distance travelled by Jeevini after 3 hours	→	360 km - 180 km
		=	180 km

Step 3:	Jeevini's speed	→	180 km ÷ 3 h
		=	60 $\frac{km}{h}$

10)

SOLUTION 1 :

← Aravindh	Indra →

Starting Point

Step 1:	Distance travelled by Aravindh after 2 hours	→	2 h x 50 $\frac{km}{h}$
		=	100 km

Step 2:	Distance travelled by Indra after 2 hours	→	210 km - 100 km
		=	110 km

Step 3:	Indra's speed	→	110 km ÷ 2 h
		=	55 $\frac{km}{h}$