HarleyQuinnLove HarleyQuinnLove

28-02-2015
Mathematics

Answered

What is the percent of increase from 25 to 35?

A.

10%

B.

29%

C.

40%

D.

71%

Verified Answer :

28-02-2015

x - the percent increase

\(25+25x=35 \ \ \ |-25 \\ 25x=10 \ \ \ |\div 25 \\ x=\frac{10}{25} \\ \Downarrow \\ x=\frac{10}{25}=\frac{10 \times 4}{25 \times 4}=\frac{40}{100}=40\%\)

The answer is C. 40% increase.

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