Mrs Chua baked 351 more cupcakes than Wendy. After Mrs Chua sold 155 of her cupcakes, she had 3 times as many cupcakes as Wendy.
- How many cupcakes did Wendy bake?
- How many cupcakes did Mrs Chua bake?
| |
Wendy |
Mrs Chua |
| Before |
1 u |
1 u + 351 |
| Change |
|
- 155 |
| After |
1 u |
1 u + 196 |
(a)
After
Number of cupcakes that Wendy had = 1 u
Number of cupcakes that Mrs Chua had = 3 x 1 u = 3 u
Before
Number of cupcakes that Wendy baked = 1 u
Number of cupcakes that Mrs Chua baked = 1 u + 351
3 u = 1 u + 351 - 155
3 u - 1 u = 196
2 u = 196
1 u = 196 ÷ 2 = 98
Number of cupcakes that Wendy baked
= 1 u
= 98
(b)
Number of cupcakes that Mrs Chua baked
= 1 u + 351
= 98 + 351
= 449
Answer(s): (a) 98; (b) 449
