Dylan received $2 from his father in the 1st week of school and $6 in the 2nd week. Each week, he receives $4 more than the week before.
- How much money did he received in the 17th week?
- In which week did he receive $30?
(a)
Amount that Dylan received on 1st Week = $2
Amount that Dylan received on 2nd Week = $16
Formula:
Amount received each week = 2 + (Week number - 1) x $4
Amount received on Week 17
= 2 + (17 - 1) x 4
= 2 + 16 x 4
= 2 + 64
= $66
(b)
Week number that Dylan received $30
= [(30 - 2) ÷ 4] + 1
= (28 ÷ 4) + 1
= 7 + 1
= 8
Answer(s): (a) $66; (b) 8