Mrs Kong baked 388 more muffins than Xandra. After Mrs Kong sold 148 of her muffins, she had 3 times as many muffins as Xandra.
- How many muffins did Xandra bake?
- How many muffins did Mrs Kong bake?
| |
Xandra |
Mrs Kong |
| Before |
1 u |
1 u + 388 |
| Change |
|
- 148 |
| After |
1 u |
1 u + 240 |
(a)
After
Number of muffins that Xandra had = 1 u
Number of muffins that Mrs Kong had = 3 x 1 u = 3 u
Before
Number of muffins that Xandra baked = 1 u
Number of muffins that Mrs Kong baked = 1 u + 388
3 u = 1 u + 388 - 148
3 u - 1 u = 240
2 u = 240
1 u = 240 ÷ 2 = 120
Number of muffins that Xandra baked
= 1 u
= 120
(b)
Number of muffins that Mrs Kong baked
= 1 u + 388
= 120 + 388
= 508
Answer(s): (a) 120; (b) 508
