Chapter 8 – Comparing
Quantities
Assignment − 1
1. In a city, 35% are females, 45% are males and
remaining are children. What per cent are children?
2. Out of 45,000 voters in a constituency, 60% voted.
Find the percentage of voters who did not vote. Can you now find how many
actually did not vote?
3. Akanksha saves ₹ 20000 from her monthly salary. If
this is 10% of her salary. What is her salary?
4. A local cricket team played 24 matches in one
season. It won 25% of them. How many matches did they lost?
5. Tell what is the profit or loss in the following
transactions. Also find profit per cent or loss per cent in each case.
(a) Gardening shears
bought for ₹ 2500 and sold for ₹ 3250.
(b) A refrigerator bought
for ₹ 12,0000 and sold at ₹ 13,5000.
(c) A cupboard bought for
₹ 15000 and sold at ₹ 21000.
(d) A skirt bought for ₹ 1250
and sold at ₹ 1750.
6. Convert each part of the ratio to percentage:
(a) 3 : 1
(b) 2 : 3 : 5
(c) 1 : 4
(d) 1 : 2 : 5
7. The population of a city decreased from 50,000 to 45,000.
Find the percentage decrease.
8. Ashrit bought a car for ₹ 60,00,000. The next year,
the price went upto
₹ 1,50,000. What was the Percentage of price increase?
9. Sushmita bought a T.V. for ₹ 85,000 and sell it at
a profit of 20%. How much money did she get for it?
10. Juhi sells a washing machine for ₹ 13,500. She
loses 20% in the bargain. What was the price at which she bought it?
11. (i) Chalk contains calcium, carbon and oxygen in
the ratio 10 : 3 : 12. Find the percentage of carbon in chalk.
(ii) If in a stick of
chalk, carbon is 3 g, what is the weight of the chalk stick?
12. Parag buys a book for ₹ 900 and sells it at a profit
of 15%. How much does he sell it for?
13. Find the amount to be paid at the end of 3 years
in each case:
(a) Principal = ₹ 1,200
at 15% p.a.
(b) Principal = ₹ 7,500
at 7% p.a.
14. What rate gives ₹ 11760 as simple interest on a
sum of ₹ 56,000 in 3 years?
15. If Devansh earns an interest of ₹ 45000 for one
year at 9% rate p.a.. What is the sum he had in his bank account?
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