Yoko made 368 cupcakes and wafers. After she gave 0.1 of the cupcakes and 0.75 of the wafers to her students, she was left with an equal number of cupcakes and wafers. How many wafers had she left?
| |
Cupcakes |
Wafers |
Before
|
10x1 =
10 u |
4x9 =
36 u |
Change
|
- 1x1 =
- 1 u |
- 3x9 =
- 27 u |
After
|
9x1 =
9 u |
1x9 =
9 u |
Comparing cupcakes and
wafers in the end |
1x9 =
9 u |
1x9 =
9 u |
0.1 =
110 0.75 =
75100 =
34 The number of cupcakes and wafers is the same in the end. Make the number of cupcakes and wafers in the end the same. LCM of 9 and 1 and 1 is 9.
Total number of cupcakes and wafers at first
= 10 u + 36 u
= 46 u
46 u = 368
1 u = 368 ÷ 46 = 8
Number of wafers that Yoko had left
= 9 u
= 9 x 8
= 72
Answer(s): 72
