Cindy saved some of her school pocket money for 5 days. She saved $4 on the first day. For the remaining 4 days, she saved $0.10 more than the previous day.
- How much money did she save in 5 days?
- Cindy then spent all her savings on 2 identical notebooks. How much did each notebook cost?
(a)
Amount that Cindy saved on the first day = $4
Amount that Cindy saved on the second day = $4 + $0.10
Amount that Cindy saved on the third day = $4 + $0.10 + $0.10
Amount that Cindy saved on the fourth day = $4 + $0.10 + $0.10 + $0.10
Amount that Cindy saved on the fifth day = $4 + $0.10 + $0.10 + $0.10 + $0.10
Total amount the Cindy saved in 5 days
= 5 x 4 + 10 x 0.10
= 20 + 1
= $21
(b)
Cost of each notebook
= 21 ÷ 2
= $10.50
Answer(s): (a) $21; (b) $10.50