Question

what is the decimal for 20%

Answer 1

To write 20% as decimal we must

1.- Write 20% as a fraction

$\text{ 20\% = }\frac{20}{100}$

2.- Simplify

$\text{ }\frac{20}{100}\text{ = }\frac{10}{50}\text{ = }\frac{5}{25}\text{ = }\frac{1}{5}$

Second question

20 questions -------------------- 100%

15 questons ----------------------- x

x = (15 x 100) / 20

x = 75%