Mrs Oh baked 432 more tarts than Olivia. After Mrs Oh sold 148 of her tarts, she had 3 times as many tarts as Olivia.
- How many tarts did Olivia bake?
- How many tarts did Mrs Oh bake?
| |
Olivia |
Mrs Oh |
| Before |
1 u |
1 u + 432 |
| Change |
|
- 148 |
| After |
1 u |
1 u + 284 |
(a)
After
Number of tarts that Olivia had = 1 u
Number of tarts that Mrs Oh had = 3 x 1 u = 3 u
Before
Number of tarts that Olivia baked = 1 u
Number of tarts that Mrs Oh baked = 1 u + 432
3 u = 1 u + 432 - 148
3 u - 1 u = 284
2 u = 284
1 u = 284 ÷ 2 = 142
Number of tarts that Olivia baked
= 1 u
= 142
(b)
Number of tarts that Mrs Oh baked
= 1 u + 432
= 142 + 432
= 574
Answer(s): (a) 142; (b) 574
