The number of pineapples is 4 times as many as the number of durians. After buying another 17 pineapples and 53 durians, the number of pineapples is the same as the number of durians. What is the number of pineapples at first?
| |
Pineapples |
Durians |
| Before |
4 u |
1 u |
| Change |
+ 17 |
+ 53 |
| After |
4 u + 17 |
1 u + 53 |
The number of pineapples and durians is the same in the end.
4 u + 17 = 1 u + 53
4 u - 1 u = 53 - 17
3 u = 36
1 u = 36 ÷ 3 = 12
Number of pineapples at first
= 4 u
= 4 x 12
= 48
Answer(s): 48
