Mrs Justin baked
13 as many cherry biscuits as apricot biscuits. She also baked
23 as many cherry biscuits as cheese biscuits. If she baked a total of 77 biscuits, how many cherry biscuits did she bake?
Cherry |
Apricot |
Cheese |
1x2 |
3x2 |
|
2x1 |
|
3x1 |
2 u |
6 u |
3 u |
The number of cherry biscuits is the repeated identity. Make the number of cherry biscuits the same. LCM of 1 and 2 is 2.
Total number of biscuits
= 2 u + 6 u + 3 u
= 11 u
11 u = 77
1 u = 77 ÷ 11 = 7
Number of cherry biscuits
= 2 u
= 2 x 7
= 14
Answer(s): 14