Usha and Wendy used the same number of blueberries to bake cakes. Usha used
57 of her blueberries and Wendy used
35 of her blueberries. They had a total of 460 blueberries at first.
- How many blueberries did each girl use?
- How many blueberries did both girls have left altogether?
| |
Usha |
Wendy |
Total |
Before |
7x3 =
21 u |
5x5 =
25 u |
46 u |
Change |
- 5x3 =
- 15 u |
- 3x5 =
- 15 u |
|
After |
2x3 =
6 u |
2x5 =
10 u |
16 u |
(a)
Usha and Wendy used the same number of blueberries to bake cakes. Make the numerators the same. LCM of 5 and 3 is 15.
5x37x3 of Mary's blueberries =
3x55x5 of Wendy's blueberries
1521 of Mary's blueberries =
1525 of Wendy's blueberries
Total number of blueberries at first
= 21 u + 25 u
= 46 u
46 u = 460
1 u = 460 ÷ 46 = 10
Number of blueberries that each girl used
= 15 u
= 15 x 10
= 150
(b)
Total number of blueberries that both girls had left
= 6 u + 10 u
= 16 u
= 16 x 10
= 160
Answer(s): (a) 150; (b) 160
