Question

Rob is saving to buy a new MP3 player. For every $13 he earns babysitting, he saves $8. On Saturday, Rob earned $39 babysitting. How much money did he save?

Answer 1

$24

Rob saved $24.

Explanation:

Rob earned $39.

39 is 3×13. So he made three 13's. Saving $8 for each 13, means that he saved three $8.

3 × 8 is 24

Rob saved $24.