Brandon received $1 from his uncle in the 1st week of school and $5 in the 2nd week. Each week, he receives $4 more than the week before.
- How much money did he received in the 10th week?
- In which week did he receive $29?
(a)
Amount that Brandon received on 1st Week = $1
Amount that Brandon received on 2nd Week = $9
Formula:
Amount received each week = 1 + (Week number - 1) x $4
Amount received on Week 10
= 1 + (10 - 1) x 4
= 1 + 9 x 4
= 1 + 36
= $37
(b)
Week number that Brandon received $29
= [(29 - 1) ÷ 4] + 1
= (28 ÷ 4) + 1
= 7 + 1
= 8
Answer(s): (a) $37; (b) 8