The ratio of pears to starfruits is 3 : 4. If 36 starfruits are added, the ratio of pears to starfruits will be 3 : 7. How many less pears than starfruits are there in the end?
| |
Pears |
Starfruits |
| Before |
3 u |
4 u |
| Change |
|
+ 36 |
| After |
3 u |
7 u |
The number of pears at first and in the end remains unchanged.
Number of starfruits added
= 7 u - 4 u
= 3 u
3 u = 36
1 u = 36 ÷ 3 = 12
Number of less pears than starfruits in the end
= 7 u - 3 u
= 4 u
= 4 x 12
= 48
Answer(s): 48
