Mrs Lau baked 362 more shortbreads than Min. After Mrs Lau sold 170 of her shortbreads, she had 5 times as many shortbreads as Min.
- How many shortbreads did Min bake?
- How many shortbreads did Mrs Lau bake?
| |
Min |
Mrs Lau |
| Before |
1 u |
1 u + 362 |
| Change |
|
- 170 |
| After |
1 u |
1 u + 192 |
(a)
After
Number of shortbreads that Min had = 1 u
Number of shortbreads that Mrs Lau had = 5 x 1 u = 5 u
Before
Number of shortbreads that Min baked = 1 u
Number of shortbreads that Mrs Lau baked = 1 u + 362
5 u = 1 u + 362 - 170
5 u - 1 u = 192
4 u = 192
1 u = 192 ÷ 4 = 48
Number of shortbreads that Min baked
= 1 u
= 48
(b)
Number of shortbreads that Mrs Lau baked
= 1 u + 362
= 48 + 362
= 410
Answer(s): (a) 48; (b) 410
