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

Question : 26 [SSC CHSL 2013]

The sum of two numbers is 520. If the bigger number is decreased by 4% and the smaller number is increased by 12%, then the numbers obtained are equal. The smaller number is

a) 210

b) 300

c) 240

d) 280

Question : 27

The strength of a school increases and decreases in every alternate year by 10%. It started with increase in 2000. Then the strength of the school in 2003 as compared to that in 2000 was

a) decreased by 8.9%

b) decreased by 9.8%

c) increased by 9.8%

d) increased by 8.9%

Question : 28 [SSC CGL Prelim 2005]

If the numerator of a fraction is increased by 20% and the denominator is decreased by 5%, the value of the new fraction becomes $5/2$. The original fraction is

a) $3/18$

b) $48/95$

c) $95/48$

d) $24/19$

Question : 29 [SSC CGL Prelim 2008]

The price of an article is reduced by 25% but the daily sale of the article is increased by 30%. The net effect on the daily sale receipts is

a) 2$1/2$% decrease

b) 2% decrease

c) 2% increase

d) 2$1/2$% increase

Question : 30 [SSC CGL Prelim 2005]

A number is first decreased by 10% and then increased by 10%. The number so obtained is 50 less than the original number. The original number is

a) 5000

b) 5050

c) 5500

d) 5900