Question

translate into an algebraic expression: 120 is decreased by d% and increased by 25%. what is the result

Answer 1

150(1-x)

Explanation:

120 is decreased by d%

Let x = d%

120 - 120*x

120(1-x)

Then it is increased by 25%

(120 (1-x)) +(120 (1-x))*.25

(120 (1-x)) +(30 (1-x))

150(1-x)

Answer 2

Solution given:

120 is decreased by d%

in algebraic expression

120-d% of 120

and then

increased by 25%

in algebraic expression

(120-d% of 120)+25% of (120-d% of 120)

(120(1-d%))+120/4*(1-d%)

(1-d%)(120+30)

150(1-d%) is a required algebraic expression.