Mrs Yeo baked 433 more cookies than Elyse. After Mrs Yeo sold 151 of her cookies, she had 3 times as many cookies as Elyse.
- How many cookies did Elyse bake?
- How many cookies did Mrs Yeo bake?
| |
Elyse |
Mrs Yeo |
| Before |
1 u |
1 u + 433 |
| Change |
|
- 151 |
| After |
1 u |
1 u + 282 |
(a)
After
Number of cookies that Elyse had = 1 u
Number of cookies that Mrs Yeo had = 3 x 1 u = 3 u
Before
Number of cookies that Elyse baked = 1 u
Number of cookies that Mrs Yeo baked = 1 u + 433
3 u = 1 u + 433 - 151
3 u - 1 u = 282
2 u = 282
1 u = 282 ÷ 2 = 141
Number of cookies that Elyse baked
= 1 u
= 141
(b)
Number of cookies that Mrs Yeo baked
= 1 u + 433
= 141 + 433
= 574
Answer(s): (a) 141; (b) 574
