The number of apple tarts Ahmad baked was
25 of the total number of tarts. After baking another 60 apple tarts, the number of apple tarts became
45 of the total number of tarts. How many tarts did she bake at first?
| |
Apple tarts |
Other tarts |
Total tarts |
| Before |
2 u |
3 u |
5 u |
| Change |
+ 60 |
|
|
| After |
4x3 =
12 u |
1x3 =
3 u |
5x3 =
15 u |
The number of other tarts remains unchanged. Make the number of other tarts the same. LCM of 3 and 1 is 3.
Number of more apple tarts baked
= 12 u - 2 u
= 10 u
10 u = 60
1 u = 60 ÷ 10 = 6
Number of tarts that Ahmad baked at first
= 5 u
= 5 x 6
= 30
Answer(s): 30
