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Chapter 2: Q2A. (page 92)

A music store has sold35 of their hip-hop CDs, but 10 were returned. Now the store has 62 hip-hop CDs. How many were there originally?

Short Answer

Expert verified

The number of hip-hop CDs in the music store were 130.

Step by step solution

01

Step 1. Make the equation.

Assume that the total hip-hop CDs in the store is x.

The number of CDs sold is 35x.

Remaining CDs are 25x.

Also 10 CDs were returned. Now the equation is 25x+10=62.

02

Step 2. Isolate the variable.

25x+10=6225x=62鈭�1025x=52

03

Step 3. Find the value of x from the equation.

2x=52脳52x=260x=2602x=130

Thus, the number of hip-hop CDs in the music store were 130.

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