Mrs Quek baked 425 more cupcakes than Opal. After Mrs Quek sold 182 of her cupcakes, she had 4 times as many cupcakes as Opal.
- How many cupcakes did Opal bake?
- How many cupcakes did Mrs Quek bake?
| |
Opal |
Mrs Quek |
| Before |
1 u |
1 u + 425 |
| Change |
|
- 182 |
| After |
1 u |
1 u + 243 |
(a)
After
Number of cupcakes that Opal had = 1 u
Number of cupcakes that Mrs Quek had = 4 x 1 u = 4 u
Before
Number of cupcakes that Opal baked = 1 u
Number of cupcakes that Mrs Quek baked = 1 u + 425
4 u = 1 u + 425 - 182
4 u - 1 u = 243
3 u = 243
1 u = 243 ÷ 3 = 81
Number of cupcakes that Opal baked
= 1 u
= 81
(b)
Number of cupcakes that Mrs Quek baked
= 1 u + 425
= 81 + 425
= 506
Answer(s): (a) 81; (b) 506
