Brian spends $x daily and saves $y per week. What is his income for 9 weeks?
Answer:
$63x + $9y
- Amount spent by Brian in 1 day = $x
- Number of days in 1 week = 7 days
Number of days in 9 weeks = 9 × 7 = 63 days
Therefore, the amount spent by Brian in 9 weeks or, 63 days = $63x - Amount saved by Brian in 1 week = $y
Amount saved by Brian in 9 week = $9y - Therefore, Brian's income for 9 weeks = Amount spent by Brian in 9 weeks + Amount saved by Brian in 9 weeks
= $63x + $9y