Xandra saved some of her school pocket money for 5 days. She saved $6 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?
- Xandra then spent all her savings on 5 identical pencils. How much did each pencil cost?
(a)
Amount that Xandra saved on the first day = $6
Amount that Xandra saved on the second day = $6 + $0.80
Amount that Xandra saved on the third day = $6 + $0.80 + $0.80
Amount that Xandra saved on the fourth day = $6 + $0.80 + $0.80 + $0.80
Amount that Xandra saved on the fifth day = $6 + $0.80 + $0.80 + $0.80 + $0.80
Total amount the Xandra saved in 5 days
= 5 x 6 + 10 x 0.80
= 30 + 8
= $38
(b)
Cost of each pencil
= 38 ÷ 5
= $7.60
Answer(s): (a) $38; (b) $7.60