Shiyun has 8 erasers fewer than Opal but 27 erasers more than Ahmad. The three children have 140 erasers altogether.
- How many erasers does Ahmad have?
- How many erasers does Opal have?
(a)
Number of erasers Opal has = 1 u
Number of erasers Shiyun has = 1 u - 8
Number of erasers Ahmad has = 1 u - 8 - 27 = 1 u - 35
Total number of erasers
= 1 u + 1 u - 8 + 1 u - 35
= 3 u - 43
3 u - 43 = 140
3 u = 140 + 43
3 u = 183
1 u = 183 ÷ 3 = 61
Number of erasers that Ahmad has
= 1 u - 35
= 61 - 35
= 26
(b)
Number of erasers that Opal has
= 1 u
= 61
Answer(s): (a) 26; (b) 61
