The number of pineapples is 4 times as many as the number of papayas. After buying another 23 pineapples and 77 papayas, the number of pineapples is the same as the number of papayas. What is the number of pineapples at first?
| |
Pineapples |
Papayas |
| Before |
4 u |
1 u |
| Change |
+ 23 |
+ 77 |
| After |
4 u + 23 |
1 u + 77 |
The number of pineapples and papayas is the same in the end.
4 u + 23 = 1 u + 77
4 u - 1 u = 77 - 23
3 u = 54
1 u = 54 ÷ 3 = 18
Number of pineapples at first
= 4 u
= 4 x 18
= 72
Answer(s): 72
