Cindy and Roshel used the same number of blueberries to bake cakes. Cindy used
25 of her blueberries and Roshel used
45 of her blueberries. They had a total of 120 blueberries at first.
- How many blueberries did each girl use?
- How many blueberries did both girls have left altogether?
| |
Cindy |
Roshel |
Total |
Before |
5x2 =
10 u |
5x1 =
5 u |
15 u |
Change |
- 2x2 =
- 4 u |
- 4x1 =
- 4 u |
|
After |
3x2 =
6 u |
1x1 =
1 u |
7 u |
(a)
Cindy and Roshel used the same number of blueberries to bake cakes. Make the numerators the same. LCM of 2 and 4 is 4.
2x25x2 of Mary's blueberries =
4x15x1 of Roshel's blueberries
410 of Mary's blueberries =
45 of Roshel's blueberries
Total number of blueberries at first
= 10 u + 5 u
= 15 u
15 u = 120
1 u = 120 ÷ 15 = 8
Number of blueberries that each girl used
= 4 u
= 4 x 8
= 32
(b)
Total number of blueberries that both girls had left
= 6 u + 1 u
= 7 u
= 7 x 8
= 56
Answer(s): (a) 32; (b) 56
