Question

A boy's marks are raised from 45 to 54. What is the percentage increase

Answer 1

54-45=9(is the marks increased)

%of marks increased=9/45*100%

                                 =20%

Please mark me as brainliest

Answer 2

$increase \: percent \: = 54 - 45 = 9 \\ ( \frac{9}{45} \times 100 )\% = 20\%$