Xuan bought four times as many scones as Oliver. After Xuan ate 5 scones, she had 10 more scones than Oliver. How many scones did they buy altogether?
| |
Xuan |
Oliver |
Total |
| Before |
4 u |
1 u |
5 u |
| Change |
- 5 |
|
|
| After |
4 u - 5 |
1 u |
|
The number of scones that Oliver had remains unchanged.
If Oliver had another 10 scones in the end, the number of scones that Xuan and Oliver had would be the same.
4 u - 5 = 1 u + 10
4 u - 1 u = 10 + 5
3 u = 15
1 u = 15 ÷ 3 = 5
Total number of scones
= 4 u + 1 u
= 5 u
= 5 x 5
= 25
Answer(s): 25
