Nicole has 15 erasers fewer than Risa but 22 erasers more than Caden. The three children have 248 erasers altogether.
- How many erasers does Caden have?
- How many erasers does Risa have?
(a)
Number of erasers Risa has = 1 u
Number of erasers Nicole has = 1 u - 15
Number of erasers Caden has = 1 u - 15 - 22 = 1 u - 37
Total number of erasers
= 1 u + 1 u - 15 + 1 u - 37
= 3 u - 52
3 u - 52 = 248
3 u = 248 + 52
3 u = 300
1 u = 300 ÷ 3 = 100
Number of erasers that Caden has
= 1 u - 37
= 100 - 37
= 63
(b)
Number of erasers that Risa has
= 1 u
= 100
Answer(s): (a) 63; (b) 100
