Nora saved some of her school pocket money for 5 days. She saved $4 on the first day. For the remaining 4 days, she saved $0.80 more than the previous day.
- How much money did she save in 5 days?
- Nora then spent all her savings on 8 identical files. How much did each file cost?
(a)
Amount that Nora saved on the first day = $4
Amount that Nora saved on the second day = $4 + $0.80
Amount that Nora saved on the third day = $4 + $0.80 + $0.80
Amount that Nora saved on the fourth day = $4 + $0.80 + $0.80 + $0.80
Amount that Nora saved on the fifth day = $4 + $0.80 + $0.80 + $0.80 + $0.80
Total amount the Nora saved in 5 days
= 5 x 4 + 10 x 0.80
= 20 + 8
= $28
(b)
Cost of each file
= 28 ÷ 8
= $3.50
Answer(s): (a) $28; (b) $3.50