When a number is increased by 20%, the result is 480. What was the original number?

A.) 384

B.) 400

C.) 456

D.) 460

E.) 576

A.) 384

B.) 400

C.) 456

D.) 460

E.) 576

If the number is x, and you increase it by 20%, then you are finding 100% of the number + another 20%,

which is finding 120% of the number.

x = the number

1.2x = 480 {changed 120% to a decimal and multiplied}

x = 400 {divided each side by 1.2}

which is finding 120% of the number.

x = the number

1.2x = 480 {changed 120% to a decimal and multiplied}

x = 400 {divided each side by 1.2}

**B.) 400**__Ask Algebra House__