Mrs Sih baked 387 more puffs than Eva. After Mrs Sih sold 145 of her puffs, she had 3 times as many puffs as Eva.
- How many puffs did Eva bake?
- How many puffs did Mrs Sih bake?
| |
Eva |
Mrs Sih |
| Before |
1 u |
1 u + 387 |
| Change |
|
- 145 |
| After |
1 u |
1 u + 242 |
(a)
After
Number of puffs that Eva had = 1 u
Number of puffs that Mrs Sih had = 3 x 1 u = 3 u
Before
Number of puffs that Eva baked = 1 u
Number of puffs that Mrs Sih baked = 1 u + 387
3 u = 1 u + 387 - 145
3 u - 1 u = 242
2 u = 242
1 u = 242 ÷ 2 = 121
Number of puffs that Eva baked
= 1 u
= 121
(b)
Number of puffs that Mrs Sih baked
= 1 u + 387
= 121 + 387
= 508
Answer(s): (a) 121; (b) 508
