Reccuring Decimals And Percentages

Question 1

If you were to increase a number by 25%, what would it’s multiplier be?

Answer 1

1.25

Question 2

If you were to decrease a number by 20%, what would it’s multiplier be?

Answer 2

0.8

Question 3

If a number has been reduced by 40% to 20, what was the original amount? (Show working)

Answer 3

y × 0.6 = 20
20÷ 0.6 = y
20 ÷ 0.6 = 33.3333….

Question 4

If a number has increased by 15% to 50, what was the original number?

Answer 4

y × 1.5 = 50
50 ÷ 1.5 = y
50 ÷ 1.5 = 33.3333333…