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.

Pugal and Pavi started driving from the same place but in opposite directions along a straight road.
After driving for 4h, they were 520 km apart. Pugal’s average speed was 65 $\frac{km}{h.}$
What was Pavi’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 3h, they were 315 km apart. Narayanan’s average speed was 45 $\frac{km}{h.}$
What was Keerthi’s driving speed
$\frac{km}{h}$

Answer:_______________

Barathan and Panimalar started driving from the same place but in opposite directions along a straight road.
After driving for 4h, they were 460 km apart. Barathan’s average speed was 60 $\frac{km}{h.}$
What was Panimalar’s driving speed
$\frac{km}{h}$

Answer:_______________

Murugan and Keerthi started driving from the same place but in opposite directions along a straight road.
After driving for 4h, they were 500 km apart. Murugan’s average speed was 60 $\frac{km}{h.}$
What was Keerthi’s driving speed
$\frac{km}{h}$

Answer:_______________

Murugan and Ramani started driving from the same place but in opposite directions along a straight road.
After driving for 3h, they were 360 km apart. Murugan’s average speed was 55 $\frac{km}{h.}$
What was Ramani’s driving speed
$\frac{km}{h}$

Answer:_______________

Narayanan and Kumutha started driving from the same place but in opposite directions along a straight road.
After driving for 3h, they were 330 km apart. Narayanan’s average speed was 50 $\frac{km}{h.}$
What was Kumutha’s driving speed
$\frac{km}{h}$

Answer:_______________

Murugan and Swathi started driving from the same place but in opposite directions along a straight road.
After driving for 3h, they were 375 km apart. Murugan’s average speed was 65 $\frac{km}{h.}$
What was Swathi’s driving speed
$\frac{km}{h}$

Answer:_______________

Barathan and Haritha started driving from the same place but in opposite directions along a straight road.
After driving for 4h, they were 440 km apart. Barathan’s average speed was 65 $\frac{km}{h.}$
What was Haritha’s driving speed
$\frac{km}{h}$

Answer:_______________

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

Answer:_______________

10)

Moorthi and Selvanayaki started driving from the same place but in opposite directions along a straight road.
After driving for 2h, they were 220 km apart. Moorthi’s average speed was 50 $\frac{km}{h.}$
What was Selvanayaki’s driving speed
$\frac{km}{h}$

Answer:_______________

SOLUTION 1 :

← Pugal	Pavi →

Starting Point

Step 1:	Distance travelled by Pugal after 4 hours	→	4 h x 65 $\frac{km}{h}$
		=	260 km

Step 2:	Distance travelled by Pavi after 4 hours	→	520 km - 260 km
		=	260 km

Step 3:	Pavi's speed	→	260 km ÷ 4 h
		=	65 $\frac{km}{h}$

SOLUTION 1 :

← Narayanan	Keerthi →

Starting Point

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

Step 2:	Distance travelled by Keerthi after 3 hours	→	315 km - 135 km
		=	180 km

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

SOLUTION 1 :

← Barathan	Panimalar →

Starting Point

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

Step 2:	Distance travelled by Panimalar after 4 hours	→	460 km - 240 km
		=	220 km

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

SOLUTION 1 :

← Murugan	Keerthi →

Starting Point

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

Step 2:	Distance travelled by Keerthi after 4 hours	→	500 km - 240 km
		=	260 km

Step 3:	Keerthi's speed	→	260 km ÷ 4 h
		=	65 $\frac{km}{h}$

SOLUTION 1 :

← Murugan	Ramani →

Starting Point

Step 1:	Distance travelled by Murugan after 3 hours	→	3 h x 55 $\frac{km}{h}$
		=	165 km

Step 2:	Distance travelled by Ramani after 3 hours	→	360 km - 165 km
		=	195 km

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

SOLUTION 1 :

← Narayanan	Kumutha →

Starting Point

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

Step 2:	Distance travelled by Kumutha after 3 hours	→	330 km - 150 km
		=	180 km

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

SOLUTION 1 :

← Murugan	Swathi →

Starting Point

Step 1:	Distance travelled by Murugan after 3 hours	→	3 h x 65 $\frac{km}{h}$
		=	195 km

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

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

SOLUTION 1 :

← Barathan	Haritha →

Starting Point

Step 1:	Distance travelled by Barathan after 4 hours	→	4 h x 65 $\frac{km}{h}$
		=	260 km

Step 2:	Distance travelled by Haritha after 4 hours	→	440 km - 260 km
		=	180 km

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

SOLUTION 1 :

← Karna	Parveen →

Starting Point

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

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

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

10)

SOLUTION 1 :

← Moorthi	Selvanayaki →

Starting Point

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

Step 2:	Distance travelled by Selvanayaki after 2 hours	→	220 km - 100 km
		=	120 km

Step 3:	Selvanayaki's speed	→	120 km ÷ 2 h
		=	60 $\frac{km}{h}$