model 2 net increase or decrease in % Practice Questions Answers Test with Solutions & More Shortcuts

Question : 21 [SSC CHSL 2012]

A number is increased by 10% and then it is decreased by 10%. The net change in the number is

a) 2% decrease

b) 1% decrease

c) 1% increase

d) no increase or decrease

Question : 22 [SSC CGL Prelim 2003]

If price of a book is first decreased by 25% and then increased by 20%, the net change in the price of the book will be

a) 5% decrease

b) 5% increase

c) no change

d) 10% decrease

Question : 23

Two successive price increases of 10% and 10% of an article are equivalent to a single price increase of

a) 20%

b) 22%

c) 21%

d) 19%

Question : 24 [SSC SAS 2010]

If a number is increased by 20% and the resulting number is again increased by 20%, what per cent is the total increase ?

a) 44%

b) 40%

c) 41%

d) 48%

Question : 25 [SSC CHSL 2014]

A number is first decreased by 20%. The decreased number is then increased by 20%. The resulting number is less than the original number by 20. Then the original number is

a) 400

b) 600

c) 500

d) 200