Question

A college student earned $246, $288, $234, and $276 over a four-week period. How much must he earn during the fifth week to have average earnings of $255 for the five weeks?

Answer 1

$255 \times 5 = 1275$

$1275 - 246 - 288 - 234 - 276 \\ = 231$

Answer : He must earn $231 during the fifth week.

Hope this helps. - M