Number Magic a textbook of Mathematics 8>Chapter 21 - Direct and Inverse Proportions>EXERCISE>Q 8

MEDIUM

8th CBSE

IMPORTANT

Earn 100

The weight of $20$ books is $17$ $kg wt$ . Find the total weight of $64$ such books.

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Important Questions on Direct and Inverse Proportions

MEDIUM

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 21 - Direct and Inverse Proportions>EXERCISE>Q 9

The cost of

17

metres of cloth is

₹ 2303.50

. If the length of this cloth that can be purchased for

₹ 8401

is

k

metres, then find the value of

k

.

MEDIUM

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 21 - Direct and Inverse Proportions>EXERCISE>Q 10

If oranges are sold at

3

for

₹ 10.50

, find the number of oranges I can buy for

₹ 42

.

MEDIUM

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 21 - Direct and Inverse Proportions>EXERCISE>Q 11

If the cost of $7 kg wt$ of onions is $₹ 133$ , find the cost of $11.5 kg wt$ of onions.

MEDIUM

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 21 - Direct and Inverse Proportions>EXERCISE>Q 11

If the cost of

7 kg wt

wt of onions is

₹ 133

, find the weight of onions bought for

₹ 228

.

MEDIUM

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 21 - Direct and Inverse Proportions>EXERCISE>Q 12

If Aditya can travel

80 km

in

2

hours, if he travels

m

kilometres in

3 \frac{1}{2}

hours, then find the value of

m .

MEDIUM

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 21 - Direct and Inverse Proportions>EXERCISE>Q 13

A car covers a distance of

175.5 km

in

13 litres

of petrol. How much distance would it cover in

20 litres

of petrol?

MEDIUM

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 21 - Direct and Inverse Proportions>EXERCISE>Q 14

A truck is travelling at an average speed of

40 km / hour

. How much distance would it travel in

2 hours 18 minutes

?

MEDIUM

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 21 - Direct and Inverse Proportions>EXERCISE>Q 15

An aeroplane flies

2695 km

in

3 hours 30 minutes

. How long will it take to fly a distance of

6160 km

at the same speed?