Zara bought thrice as many tarts as Harry. After Zara ate 6 tarts, she had 8 more tarts than Harry. How many tarts did they buy altogether?
| |
Zara |
Harry |
Total |
| Before |
3 u |
1 u |
4 u |
| Change |
- 6 |
|
|
| After |
3 u - 6 |
1 u |
|
The number of tarts that Harry had remains unchanged.
If Harry had another 8 tarts in the end, the number of tarts that Zara and Harry had would be the same.
3 u - 6 = 1 u + 8
3 u - 1 u = 8 + 6
2 u = 14
1 u = 14 ÷ 2 = 7
Total number of tarts
= 3 u + 1 u
= 4 u
= 4 x 7
= 28
Answer(s): 28
