Luis has four times as many erasers as Archie. Archie has 9 more erasers than Lee. They have a total of 117 erasers.
- How many erasers does Luis have?
- How many erasers does Lee have?
(a)
Number of erasers that Archie has = 1 u
Number of erasers that Lee has = 1 u - 9
Number of erasers that Luis has = 4 u
Total number of erasers
= 1 u + 1 u - 9 + 4 u
= 6 u - 9
6 u - 9 = 117
6 u = 117 + 9
6 u = 126
1 u = 126 ÷ 6 = 21
Number of erasers that Luis has
= 4 u
= 4 x 21
= 84
(b)
Number of erasers that Lee has
= 1 u - 9
= 21 - 9
= 12
Answer(s): (a) 84; (b) 12
