Warren and David have a total of 80 erasers. If Warren gives David 34 erasers, David will have 4 times as many erasers as him. Find
(a) Warren's erasers
(b) David's erasers
|
Warren |
David |
Total |
Before |
1 u + 34 |
4 u - 34 |
80 |
Change |
- 34 |
+ 34 |
|
After |
1 u |
4 u |
5 u |
(a)
Total number of erasers
= 1 u + 4 u
= 5 u
5 u = 80
1 u = 80 ÷ 5 = 16
Number of erasers that Warren has
= 1 u + 34
= 16 + 34
= 50
(b)
Number of erasers that David has
= 80 - 50
= 30
Answer(s): (a) 50; (b) 30