When a number is descreased by 20% the result is 144 . What is the Number ?

Question

it’s a five step strategy World Problem find the number or numbers described in the question above. By using the five steps

Answer 1

20% = 20/100 = 1/5

Let x = the number. decrease it by 1/5

x - x/5 = 4x/5 = 144

Multiply both sides by 5/4

x = (5/4)144 = (5/2)(72) = 5(36) = 180

x=180

check the answer

180 - (1/5)(180) = 180 - 36 = 144