Michael received $4 from his father in the 1st week of school and $10 in the 2nd week. Each week, he receives $6 more than the week before.
- How much money did he received in the 16th week?
- In which week did he receive $22?
(a)
Amount that Michael received on 1st Week = $4
Amount that Michael received on 2nd Week = $15
Formula:
Amount received each week = 4 + (Week number - 1) x $6
Amount received on Week 16
= 4 + (16 - 1) x 6
= 4 + 15 x 6
= 4 + 90
= $94
(b)
Week number that Michael received $22
= [(22 - 4) ÷ 6] + 1
= (18 ÷ 6) + 1
= 3 + 1
= 4
Answer(s): (a) $94; (b) 4