Warren and Julian had a total of 42 marbles. Julian had half as many marbles as Warren. How many marbles must Warren give to Julian so they have an equal number of marbles?
| |
Warren |
Julian |
Total |
| Before |
2 u |
1 u |
42 |
| Change |
- ? |
+ ? |
|
| After |
1 |
1 |
|
Total number of marbles at first = 3 u
1 u = 42 ÷ 3 = 14
Warren and Julian have an equal number of marbles in the end.
Number of marbles that Julian has in the end
= 42 ÷ 2
= 21
Number of marbles that Warren must give to Julian
= 21 - 14
= 7
Answer(s): 7
