Mrs Yap baked 322 more cupcakes than Rachel. After Mrs Yap sold 193 of her cupcakes, she had 4 times as many cupcakes as Rachel.
- How many cupcakes did Rachel bake?
- How many cupcakes did Mrs Yap bake?
| |
Rachel |
Mrs Yap |
| Before |
1 u |
1 u + 322 |
| Change |
|
- 193 |
| After |
1 u |
1 u + 129 |
(a)
After
Number of cupcakes that Rachel had = 1 u
Number of cupcakes that Mrs Yap had = 4 x 1 u = 4 u
Before
Number of cupcakes that Rachel baked = 1 u
Number of cupcakes that Mrs Yap baked = 1 u + 322
4 u = 1 u + 322 - 193
4 u - 1 u = 129
3 u = 129
1 u = 129 ÷ 3 = 43
Number of cupcakes that Rachel baked
= 1 u
= 43
(b)
Number of cupcakes that Mrs Yap baked
= 1 u + 322
= 43 + 322
= 365
Answer(s): (a) 43; (b) 365
