Mary, Tina and Bryan baked some scones. Mary and Tina baked
34 of the scones. Tina and Bryan baked
25 of the scones. Mary and Bryan baked 493 scones altogether.
- What fraction of the scones did Mary and Bryan bake altogether?
- How many scones did the three girls bake in total?
| Mary |
Tina |
Bryan |
Total |
| 3x5 |
1x5 |
4x5 |
| 3x4 |
2x4 |
5x4 |
| 12 u |
3 u |
5 u |
20 u |
(a)
The total number of scones remains unchanged. Make the total number of scones the same. LCM of 4 and 5 is 20.
Number of scones baked by Tina
= 8 u - 5 u
= 3 u
Number of scones baked by Mary and Bryan
= 12 u + 5 u
= 17 u
Total number of tarts = 20 u
Fraction of the scones baked by Mary and Bryan =
1720(b)
Total number of scones baked by Mary and Bryan = 17 u
17 u = 493
1 u = 493 ÷ 17 = 29
Total number of scones the three girls baked
= 20 u
= 20 x 29
= 580
Answer(s): (a)
1720; (b) 580
