Lee and Sam have a total of 75 cards. If Lee gives Sam 42 cards, Sam will have 4 times as many cards as him. Find
(a) Lee's cards
(b) Sam's cards
|
Lee |
Sam |
Total |
Before |
1 u + 42 |
4 u - 42 |
75 |
Change |
- 42 |
+ 42 |
|
After |
1 u |
4 u |
5 u |
(a)
Total number of cards
= 1 u + 4 u
= 5 u
5 u = 75
1 u = 75 ÷ 5 = 15
Number of cards that Lee has
= 1 u + 42
= 15 + 42
= 57
(b)
Number of cards that Sam has
= 75 - 57
= 18
Answer(s): (a) 57; (b) 18