Flynn received $1 from his father in the 1st week of school and $8 in the 2nd week. Each week, he receives $7 more than the week before.
- How much money did he received in the 11th week?
- In which week did he receive $29?
(a)
Amount that Flynn received on 1st Week = $1
Amount that Flynn received on 2nd Week = $10
Formula:
Amount received each week = 1 + (Week number - 1) x $7
Amount received on Week 11
= 1 + (11 - 1) x 7
= 1 + 10 x 7
= 1 + 70
= $71
(b)
Week number that Flynn received $29
= [(29 - 1) ÷ 7] + 1
= (28 ÷ 7) + 1
= 4 + 1
= 5
Answer(s): (a) $71; (b) 5