Mrs Chen baked 391 more macarons than Barbara. After Mrs Chen sold 175 of her macarons, she had 4 times as many macarons as Barbara.
- How many macarons did Barbara bake?
- How many macarons did Mrs Chen bake?
| |
Barbara |
Mrs Chen |
| Before |
1 u |
1 u + 391 |
| Change |
|
- 175 |
| After |
1 u |
1 u + 216 |
(a)
After
Number of macarons that Barbara had = 1 u
Number of macarons that Mrs Chen had = 4 x 1 u = 4 u
Before
Number of macarons that Barbara baked = 1 u
Number of macarons that Mrs Chen baked = 1 u + 391
4 u = 1 u + 391 - 175
4 u - 1 u = 216
3 u = 216
1 u = 216 ÷ 3 = 72
Number of macarons that Barbara baked
= 1 u
= 72
(b)
Number of macarons that Mrs Chen baked
= 1 u + 391
= 72 + 391
= 463
Answer(s): (a) 72; (b) 463
