Anna made 350 wafers and muffins. After she gave 0.7 of the wafers and 0.6 of the muffins to her girls, she was left with an equal number of wafers and muffins. How many wafers had she left?
| |
Wafers |
Muffins |
Before
|
10x2 =
20 u |
5x3 =
15 u |
Change
|
- 7x2 =
- 14 u |
- 3x3 =
- 9 u |
After
|
3x2 =
6 u |
2x3 =
6 u |
Comparing wafers and
muffins in the end |
1x6 =
6 u |
1x6 =
6 u |
0.7 =
710 0.6 =
610 =
35 The number of wafers and muffins is the same in the end. Make the number of wafers and muffins in the end the same. LCM of 3 and 2 and 1 is 6.
Total number of wafers and muffins at first
= 20 u + 15 u
= 35 u
35 u = 350
1 u = 350 ÷ 35 = 10
Number of wafers that Anna had left
= 6 u
= 6 x 10
= 60
Answer(s): 60
