Mrs Chong baked 352 more cookies than Zara. After Mrs Chong sold 152 of her cookies, she had 5 times as many cookies as Zara.
- How many cookies did Zara bake?
- How many cookies did Mrs Chong bake?
| |
Zara |
Mrs Chong |
| Before |
1 u |
1 u + 352 |
| Change |
|
- 152 |
| After |
1 u |
1 u + 200 |
(a)
After
Number of cookies that Zara had = 1 u
Number of cookies that Mrs Chong had = 5 x 1 u = 5 u
Before
Number of cookies that Zara baked = 1 u
Number of cookies that Mrs Chong baked = 1 u + 352
5 u = 1 u + 352 - 152
5 u - 1 u = 200
4 u = 200
1 u = 200 ÷ 4 = 50
Number of cookies that Zara baked
= 1 u
= 50
(b)
Number of cookies that Mrs Chong baked
= 1 u + 352
= 50 + 352
= 402
Answer(s): (a) 50; (b) 402
