Practice the questions given in the worksheet on decrease percentage.
We know, decrease percent is calculated on the original value. To find the decrease % the formula is (decrease in value/original value) × 100%
1. Find the decrease percent:
(i) 60 by 45 %
(ii) 140 by 35 %
(iii) 25 by 20 %
(iv) 90 by 2^{1}/_{3} %(v) 60 by 12 %
(vi) 12000 by 0.8 %
(vii) 480 by 1.25 %
(viii) 2000 by 3.75 %
(ix) 180 by 33^{1}/_{3} %2. Find the number which when decreased by:
(i) 10 % becomes 81
(ii) 15 % becomes 68
(iii) 2.4 % becomes 244
3. The population of a village decreased by 12 %. If the original population was 25000, find the population after decrease?
4. By what number must the given number be multiplied to decrease the number by 20 %?
5. If 10 % of a bill is deducted, still $27000 is left to be paid. How much was the bill?
6. The excise duty on a certain item has been reduced from 750 to 500. Find the percentage reduction in the excise duty on that item.
7. A car which was advertised for sale for $95000, was ultimately sold for $83600. Find the percent reduction in the price.
8. On decreasing the price of T.V by 12 %, the price becomes 44000. What was the original price of the T.V?
9. What number when decreased by 10 % becomes 207?
10. The salary of Mr. Jackson is $ 8400 per month and is now decreased by 5 %. Find his new salary per month.
11. A number is decreased by 10 % and then increased by 10 %. Find the net increase or decrease per cent.
12. The price of a scooter was $8000 in 2010. It reduced to $6000 in 2013. By what percent did the price of the scooter reduce?
Answers for the worksheet on decrease percentage are given below to check the exact answers of the above questions.
Answers:
1. (i) 33
(ii) 91
(iii) 20
(iv) 87.9
(v) 52.8
(vi) 11904
(vii) 474
(viii) 1925
(ix) 120
2. (i) 90
(ii) 80
(iii) 250
3. 22000
4. 4/5
5. 30000
6. 33^{1}/_{3} %7. 12 %
8. $ 50,000
9. 230
10. $7980
11. decreased 1 %
12. 25 %
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