There were 40 dragonfruits altogether in Basket A and Basket B. After I had transferred 7 dragonfruits from Basket A to Basket B, the number of dragonfruits in Basket A became thrice the number of dragonfruits in Basket B. How many dragonfruits were there in Basket A at first?
|
A |
B |
Total |
Before |
3 u + 7 |
1 u - 7 |
40 |
Change |
- 7 |
+ 7 |
|
After |
3 u |
1 u |
40 |
Total number of dragonfruits
= 3 u + 1 u
= 4 u
4 u = 40
1 u = 40 ÷ 4 = 10
Number of dragonfruits in Basket A in the end
= 3 u
= 3 x 10
= 30
Number of dragonfruits in Basket A at first
= 30 + 7
= 37
Answer(s): 37