Jade made 110 tarts and scones. After she gave 0.3 of the tarts and 0.6 of the scones to her friends, she was left with an equal number of tarts and scones. How many tarts had she left?
| |
Tarts |
Scones |
Before
|
10x2 =
20 u |
5x7 =
35 u |
Change
|
- 3x2 =
- 6 u |
- 3x7 =
- 21 u |
After
|
7x2 =
14 u |
2x7 =
14 u |
Comparing tarts and
scones in the end |
1x14 =
14 u |
1x14 =
14 u |
0.3 =
310 0.6 =
610 =
35 The number of tarts and scones is the same in the end. Make the number of tarts and scones in the end the same. LCM of 7 and 2 and 1 is 14.
Total number of tarts and scones at first
= 20 u + 35 u
= 55 u
55 u = 110
1 u = 110 ÷ 55 = 2
Number of tarts that Jade had left
= 14 u
= 14 x 2
= 28
Answer(s): 28
