Practice!

Sample Problem

The weight of 6 watermelons and some apples is 23 kg. The weight of each watermelon is 3 kg. What is the mass of the apples?

  kg

Solution

Watermelon

Description: C:\Users\Chen\AppData\Local\Temp\msohtmlclip1\02\clip_image001.png

The total weight of watermelons: 6 × 3 kg = 18 kg.

Apple

Description: C:\Users\Chen\AppData\Local\Temp\msohtmlclip1\02\clip_image002.png

 23 kg – 18 kg = 5 kg

The mass of the apples is 5 kg.