Min saved some of her school pocket money for 4 days. She saved $7 on the first day. For the remaining 3 days, she saved $0.60 more than the previous day.
- How much money did she save in 4 days?
- Min then spent all her savings on 2 identical files. How much did each file cost?
(a)
Amount that Min saved on the first day = $7
Amount that Min saved on the second day = $7 + $0.60
Amount that Min saved on the third day = $7 + $0.60 + $0.60
Amount that Min saved on the fourth day = $7 + $0.60 + $0.60 + $0.60
Total amount the Min saved in 4 days
= 4 x 7 + 6 x 0.60
= 28 + 3.60
= $31.60
(b)
Cost of each file
= 31.60 ÷ 2
= $15.80
Answer(s): (a) $31.60; (b) $15.80