Gwen made 275 scones and tarts. After she gave 0.9 of the scones and 0.6 of the tarts to her children, she was left with an equal number of scones and tarts. How many scones had she left?
| |
Scones |
Tarts |
Before
|
10x2 =
20 u |
5x1 =
5 u |
Change
|
- 9x2 =
- 18 u |
- 3x1 =
- 3 u |
After
|
1x2 =
2 u |
2x1 =
2 u |
Comparing scones and
tarts in the end |
1x2 =
2 u |
1x2 =
2 u |
0.9 =
910 0.6 =
610 =
35 The number of scones and tarts is the same in the end. Make the number of scones and tarts in the end the same. LCM of 1 and 2 and 1 is 2.
Total number of scones and tarts at first
= 20 u + 5 u
= 25 u
25 u = 275
1 u = 275 ÷ 25 = 11
Number of scones that Gwen had left
= 2 u
= 2 x 11
= 22
Answer(s): 22
