Jack has
411 as many coins as John. They have a total of 300 coins. How many coins must John give to Jack so that they will have the same number of coins?
| |
Jack |
John |
Total |
| Before |
4 u |
11 u |
15 u |
| Change |
+ ? |
- ? |
|
| After |
150 |
150 |
300 |
Total number of coins
= 4 u + 11 u
= 15 u
15 u = 300
1 u = 300 ÷ 15 = 20
Number of coins that each of them has in the end
= 300 ÷ 2
= 150
Number of coins that Jack has
= 4 u
= 4 x 20
= 80
Number of coins that John must give Jack
= 150 - 80
= 70
Answer(s): 70
