Tom has
57 as many cards as John. They have a total of 288 cards. How many cards must John give to Tom so that they will have the same number of cards?
| |
Tom |
John |
Total |
| Before |
5 u |
7 u |
12 u |
| Change |
+ ? |
- ? |
|
| After |
144 |
144 |
288 |
Total number of cards
= 5 u + 7 u
= 12 u
12 u = 288
1 u = 288 ÷ 12 = 24
Number of cards that each of them has in the end
= 288 ÷ 2
= 144
Number of cards that Tom has
= 5 u
= 5 x 24
= 120
Number of cards that John must give Tom
= 144 - 120
= 24
Answer(s): 24
