Tommy has 227 marbles and Neave has 474 marbles. How many marbles must Neave give to Tommy so that Tommy will have 63 less marbles than Neave?
| |
Tommy |
Neave |
Total |
| Before |
227 |
474 |
701 |
| Change |
+ ? |
- ? |
|
| After |
1 u |
1 u + 63 |
701 |
The total number of marbles remains unchanged after Neave gives to Tommy.
Total number of marbles
= 227 + 474
= 701
Total number of marbles in the end
= 1 u + 1 u + 63
= 2 u + 63
2 u + 63 = 701
2 u = 701 - 63
2 u = 638
1 u = 638 ÷ 2 = 319
Number of marbles that Neave must give to Tommy
= 319 - 227
= 92
Answer(s): 92
