Abi and Barbara used the same number of blueberries to bake cakes. Abi used
27 of her blueberries and Barbara used
47 of her blueberries. They had a total of 63 blueberries at first.
- How many blueberries did each girl use?
- How many blueberries did both girls have left altogether?
| |
Abi |
Barbara |
Total |
Before |
7x2 =
14 u |
7x1 =
7 u |
21 u |
Change |
- 2x2 =
- 4 u |
- 4x1 =
- 4 u |
|
After |
5x2 =
10 u |
3x1 =
3 u |
13 u |
(a)
Abi and Barbara used the same number of blueberries to bake cakes. Make the numerators the same. LCM of 2 and 4 is 4.
2x27x2 of Mary's blueberries =
4x17x1 of Barbara's blueberries
414 of Mary's blueberries =
47 of Barbara's blueberries
Total number of blueberries at first
= 14 u + 7 u
= 21 u
21 u = 63
1 u = 63 ÷ 21 = 3
Number of blueberries that each girl used
= 4 u
= 4 x 3
= 12
(b)
Total number of blueberries that both girls had left
= 10 u + 3 u
= 13 u
= 13 x 3
= 39
Answer(s): (a) 12; (b) 39
