Question

Adam plans to choose a video game from a section of the store where everything is 75% off. He writes the expression d - 0.75d to find the sale price of the game if the original price is d dollars. Rena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. Use the drop-down menus to explain what each part of Adam's and Rena's expressions mean. CLEAR Adam's Expression: d -0.750

d:
0.75:
0.75d:
d-0.75d:
Rena's Expression: 0.250
0.25:
d
0.25d

Answer 1

Given that the original price is d dollars.

In the store, everything is 75% off.

Adam's expression is

`d-0.75d`

Rena's expression is

`0.25d`

In Adam's expression

d is the original price of the video game.

0.75 is the percent discount.

0.75d is the amount of discount.

d-0.75d is the sale price of the video game.

Now, on simplifying,

`d-0.75d=0.25d`

So, in Rena's expression,

0.25 is the percent of the original price Rena will pay

0.25d is the sale price of the video game

d is the original price of the video game.