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.

Kumar and Poongodi 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 55 $\frac{km}{h.}$
What was Poongodi’s driving speed
$\frac{km}{h}$

Answer:_______________

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

Answer:_______________

Moorthi and Kumutha started driving from the same place but in opposite directions along a straight road.
After driving for 3h, they were 345 km apart. Moorthi’s average speed was 45 $\frac{km}{h.}$
What was Kumutha’s driving speed
$\frac{km}{h}$

Answer:_______________

Prem and Jeevini started driving from the same place but in opposite directions along a straight road.
After driving for 2h, they were 190 km apart. Prem’s average speed was 50 $\frac{km}{h.}$
What was Jeevini’s driving speed
$\frac{km}{h}$

Answer:_______________

Balaji 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. Balaji’s average speed was 45 $\frac{km}{h.}$
What was Indra’s driving speed
$\frac{km}{h}$

Answer:_______________

Moorthi and Chithra started driving from the same place but in opposite directions along a straight road.
After driving for 4h, they were 380 km apart. Moorthi’s average speed was 50 $\frac{km}{h.}$
What was Chithra’s driving speed
$\frac{km}{h}$

Answer:_______________

Raj 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. Raj’s average speed was 50 $\frac{km}{h.}$
What was Mithra’s driving speed
$\frac{km}{h}$

Answer:_______________

Murugan and Thamarai started driving from the same place but in opposite directions along a straight road.
After driving for 4h, they were 380 km apart. Murugan’s average speed was 50 $\frac{km}{h.}$
What was Thamarai’s driving speed
$\frac{km}{h}$

Answer:_______________

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

Answer:_______________

10)

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

Answer:_______________

SOLUTION 1 :

← Kumar	Poongodi →

Starting Point

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

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

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

SOLUTION 1 :

← Kumar	Indra →

Starting Point

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

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

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

SOLUTION 1 :

← Moorthi	Kumutha →

Starting Point

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

Step 2:	Distance travelled by Kumutha after 3 hours	→	345 km - 135 km
		=	210 km

Step 3:	Kumutha's speed	→	210 km ÷ 3 h
		=	70 $\frac{km}{h}$

SOLUTION 1 :

← Prem	Jeevini →

Starting Point

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

Step 2:	Distance travelled by Jeevini after 2 hours	→	190 km - 100 km
		=	90 km

Step 3:	Jeevini's speed	→	90 km ÷ 2 h
		=	45 $\frac{km}{h}$

SOLUTION 1 :

← Balaji	Indra →

Starting Point

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

Step 2:	Distance travelled by Indra after 2 hours	→	210 km - 90 km
		=	120 km

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

SOLUTION 1 :

← Moorthi	Chithra →

Starting Point

Step 1:	Distance travelled by Moorthi after 4 hours	→	4 h x 50 $\frac{km}{h}$
		=	200 km

Step 2:	Distance travelled by Chithra after 4 hours	→	380 km - 200 km
		=	180 km

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

SOLUTION 1 :

← Raj	Mithra →

Starting Point

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

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

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

SOLUTION 1 :

← Murugan	Thamarai →

Starting Point

Step 1:	Distance travelled by Murugan after 4 hours	→	4 h x 50 $\frac{km}{h}$
		=	200 km

Step 2:	Distance travelled by Thamarai after 4 hours	→	380 km - 200 km
		=	180 km

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

SOLUTION 1 :

← Barathan	Poovazhagi →

Starting Point

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

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

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

10)

SOLUTION 1 :

← Aravindh	Pavi →

Starting Point

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

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

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