There were 94 lemons and mangosteens in a stall at first. After
16 of the lemons and
12 of the mangosteens were sold, there were a total of 75 lemons and mangosteens now. How many lemons were there at first?
| |
Lemons |
Mangosteens |
Total |
| Before |
6 u |
2 p |
94 |
| Change |
- 1 u |
- 1 p |
- 19 |
| After |
5 u |
1 p |
75 |
Total number of lemons and mangosteens sold
= 94 - 75
= 19
5 u + 1 p = 75
1 p = 75 - 5 u --- (1)
1 u + 1 p = 19
1 p = 19 - 1 u --- (2)
(2) = (1)
19 - 1 u = 75 - 5 u
5 u - 1 u = 75 - 19
4 u = 56
1 u = 56 ÷ 4 = 14
Number of lemons at first
= 6 u
= 6 x 14
= 84
Answer(s): 84
