Gillian bought thrice as many macarons as Glen. After Gillian ate 4 macarons, she had 12 more macarons than Glen. How many macarons did they buy altogether?
| |
Gillian |
Glen |
Total |
| Before |
3 u |
1 u |
4 u |
| Change |
- 4 |
|
|
| After |
3 u - 4 |
1 u |
|
The number of macarons that Glen had remains unchanged.
If Glen had another 12 macarons in the end, the number of macarons that Gillian and Glen had would be the same.
3 u - 4 = 1 u + 12
3 u - 1 u = 12 + 4
2 u = 16
1 u = 16 ÷ 2 = 8
Total number of macarons
= 3 u + 1 u
= 4 u
= 4 x 8
= 32
Answer(s): 32
