Ian had some pastries.
58 of them were scones. The rest were cookies. He sold
34 of the scones and 3 cookies. In the end, he had 150 pastries left. How many more scones than cookies did he sell?
| |
Scones |
Cookies |
Comparing pastries
at first |
5x4 =
20 u |
3x4 =
12 u |
Before
|
4x5 =
20 u |
12 u |
Change
|
- 3x5 =
- 15 u |
- 3 |
After
|
1x5 =
5 u |
12 u - 3 |
The number of scones at first is repeated. Make the number of scones at first the same. LCM of 5 and 4 is 20.
Total number of pastries left
= 5 u + 12 u - 3
= 17 u - 3
17 u - 3 = 150
17 u = 150 + 3
17 u = 153
1 u = 153 ÷ 17 = 9
Number of more scones than cookies that Ian sold
= 15 u - 3
= 15 x 9 - 3
= 135 - 3
= 132
Answer(s): 132
