Mrs Cheong baked 417 more puffs than Hazel. After Mrs Cheong sold 197 of her puffs, she had 3 times as many puffs as Hazel.
- How many puffs did Hazel bake?
- How many puffs did Mrs Cheong bake?
| |
Hazel |
Mrs Cheong |
| Before |
1 u |
1 u + 417 |
| Change |
|
- 197 |
| After |
1 u |
1 u + 220 |
(a)
After
Number of puffs that Hazel had = 1 u
Number of puffs that Mrs Cheong had = 3 x 1 u = 3 u
Before
Number of puffs that Hazel baked = 1 u
Number of puffs that Mrs Cheong baked = 1 u + 417
3 u = 1 u + 417 - 197
3 u - 1 u = 220
2 u = 220
1 u = 220 ÷ 2 = 110
Number of puffs that Hazel baked
= 1 u
= 110
(b)
Number of puffs that Mrs Cheong baked
= 1 u + 417
= 110 + 417
= 527
Answer(s): (a) 110; (b) 527
