Eric and Andy have a total of 72 cards. If Eric gives Andy 32 cards, Andy will have 3 times as many cards as him. Find
(a) Eric's cards
(b) Andy's cards
|
Eric |
Andy |
Total |
Before |
1 u + 32 |
3 u - 32 |
72 |
Change |
- 32 |
+ 32 |
|
After |
1 u |
3 u |
4 u |
(a)
Total number of cards
= 1 u + 3 u
= 4 u
4 u = 72
1 u = 72 ÷ 4 = 18
Number of cards that Eric has
= 1 u + 32
= 18 + 32
= 50
(b)
Number of cards that Andy has
= 72 - 50
= 22
Answer(s): (a) 50; (b) 22