Mrs Seow baked 393 more tarts than Esther. After Mrs Seow sold 135 of her tarts, she had 3 times as many tarts as Esther.
- How many tarts did Esther bake?
- How many tarts did Mrs Seow bake?
| |
Esther |
Mrs Seow |
| Before |
1 u |
1 u + 393 |
| Change |
|
- 135 |
| After |
1 u |
1 u + 258 |
(a)
After
Number of tarts that Esther had = 1 u
Number of tarts that Mrs Seow had = 3 x 1 u = 3 u
Before
Number of tarts that Esther baked = 1 u
Number of tarts that Mrs Seow baked = 1 u + 393
3 u = 1 u + 393 - 135
3 u - 1 u = 258
2 u = 258
1 u = 258 ÷ 2 = 129
Number of tarts that Esther baked
= 1 u
= 129
(b)
Number of tarts that Mrs Seow baked
= 1 u + 393
= 129 + 393
= 522
Answer(s): (a) 129; (b) 522
