Mrs Oh baked 339 more muffins than Gillian. After Mrs Oh sold 139 of her muffins, she had 3 times as many muffins as Gillian.
- How many muffins did Gillian bake?
- How many muffins did Mrs Oh bake?
| |
Gillian |
Mrs Oh |
| Before |
1 u |
1 u + 339 |
| Change |
|
- 139 |
| After |
1 u |
1 u + 200 |
(a)
After
Number of muffins that Gillian had = 1 u
Number of muffins that Mrs Oh had = 3 x 1 u = 3 u
Before
Number of muffins that Gillian baked = 1 u
Number of muffins that Mrs Oh baked = 1 u + 339
3 u = 1 u + 339 - 139
3 u - 1 u = 200
2 u = 200
1 u = 200 ÷ 2 = 100
Number of muffins that Gillian baked
= 1 u
= 100
(b)
Number of muffins that Mrs Oh baked
= 1 u + 339
= 100 + 339
= 439
Answer(s): (a) 100; (b) 439
