Zeph received $4 from his father in the 1st week of school and $8 in the 2nd week. Each week, he receives $4 more than the week before.
- How much money did he received in the 6th week?
- In which week did he receive $16?
(a)
Amount that Zeph received on 1st Week = $4
Amount that Zeph received on 2nd Week = $5
Formula:
Amount received each week = 4 + (Week number - 1) x $4
Amount received on Week 6
= 4 + (6 - 1) x 4
= 4 + 5 x 4
= 4 + 20
= $24
(b)
Week number that Zeph received $16
= [(16 - 4) ÷ 4] + 1
= (12 ÷ 4) + 1
= 3 + 1
= 4
Answer(s): (a) $24; (b) 4