Gabby made 228 scones and shortbreads. After she gave 0.3 of the scones and 0.75 of the shortbreads to her boys, she was left with an equal number of scones and shortbreads. How many shortbreads had she left?
| |
Scones |
Shortbreads |
Before
|
10x1 =
10 u |
4x7 =
28 u |
Change
|
- 3x1 =
- 3 u |
- 3x7 =
- 21 u |
After
|
7x1 =
7 u |
1x7 =
7 u |
Comparing scones and
shortbreads in the end |
1x7 =
7 u |
1x7 =
7 u |
0.3 =
310 0.75 =
75100 =
34 The number of scones and shortbreads is the same in the end. Make the number of scones and shortbreads in the end the same. LCM of 7 and 1 and 1 is 7.
Total number of scones and shortbreads at first
= 10 u + 28 u
= 38 u
38 u = 228
1 u = 228 ÷ 38 = 6
Number of shortbreads that Gabby had left
= 7 u
= 7 x 6
= 42
Answer(s): 42
