Yoko made 456 muffins and scones. After she gave 0.3 of the muffins and 0.75 of the scones to her girls, she was left with an equal number of muffins and scones. How many scones had she left?
| |
Muffins |
Scones |
Before
|
10x1 =
10 u |
4x7 =
28 u |
Change
|
- 3x1 =
- 3 u |
- 3x7 =
- 21 u |
After
|
7x1 =
7 u |
1x7 =
7 u |
Comparing muffins and
scones in the end |
1x7 =
7 u |
1x7 =
7 u |
0.3 =
310 0.75 =
75100 =
34 The number of muffins and scones is the same in the end. Make the number of muffins and scones in the end the same. LCM of 7 and 1 and 1 is 7.
Total number of muffins and scones at first
= 10 u + 28 u
= 38 u
38 u = 456
1 u = 456 ÷ 38 = 12
Number of scones that Yoko had left
= 7 u
= 7 x 12
= 84
Answer(s): 84
