PSLEThe graph shows the amount of money Riordan saved from his pocket money every month from March to July.
- How much money did Riordan save altogether from March to July?
- What was the average amount of money Riordan saved from March to July?
- Riordan saved $57 in August. The amount saved increased by 100% from August to September and another 100% from September to October. How much money did Riordan save in October?
(a)
Amount saved in March = $25
Amount saved in April = 0
Amount saved in May = $34
Amount saved in June = $84
Amount saved in July = $27
Total amount saved from March to July
= 25 + 34 + 84 + 27
= $170
(b)
Average amount saved from March to July
= 170 ÷ 5
= $34
(c)
Amount that Riordan saved in August = $57
Amount that Riordan saved in September
= 57 + 57
= $114
Amount that Riordan saved in October
= 114 + 114
= $228
Answer(s): (a) $170; (b) $34; (c) $228