The number of blueberry biscuits Simon baked was
37 of the total number of biscuits. After baking another 189 blueberry biscuits, the number of blueberry biscuits became
67 of the total number of biscuits. How many biscuits did she bake at first?
| |
Blueberry biscuits |
Other biscuits |
Total biscuits |
| Before |
3 u |
4 u |
7 u |
| Change |
+ 189 |
|
|
| After |
6x4 =
24 u |
1x4 =
4 u |
7x4 =
28 u |
The number of other biscuits remains unchanged. Make the number of other biscuits the same. LCM of 4 and 1 is 4.
Number of more blueberry biscuits baked
= 24 u - 3 u
= 21 u
21 u = 189
1 u = 189 ÷ 21 = 9
Number of biscuits that Simon baked at first
= 7 u
= 7 x 9
= 63
Answer(s): 63
