The number of chocolate chip tarts Lee baked was
25 of the total number of tarts. After baking another 130 chocolate chip tarts, the number of chocolate chip tarts became
56 of the total number of tarts. How many tarts did she bake at first?
| |
Chocolate chip tarts |
Other tarts |
Total tarts |
| Before |
2 u |
3 u |
5 u |
| Change |
+ 130 |
|
|
| After |
5x3 =
15 u |
1x3 =
3 u |
6x3 =
18 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 chocolate chip tarts baked
= 15 u - 2 u
= 13 u
13 u = 130
1 u = 130 ÷ 13 = 10
Number of tarts that Lee baked at first
= 5 u
= 5 x 10
= 50
Answer(s): 50
