There were 48 mangosteens and passion fruits in a stall at first. After
16 of the mangosteens and
12 of the passion fruits were sold, there were a total of 38 mangosteens and passion fruits now. How many mangosteens were there at first?
| |
Mangosteens |
Passion Fruits |
Total |
| Before |
6 u |
2 p |
48 |
| Change |
- 1 u |
- 1 p |
- 10 |
| After |
5 u |
1 p |
38 |
Total number of mangosteens and passion fruits sold
= 48 - 38
= 10
5 u + 1 p = 38
1 p = 38 - 5 u --- (1)
1 u + 1 p = 10
1 p = 10 - 1 u --- (2)
(2) = (1)
10 - 1 u = 38 - 5 u
5 u - 1 u = 38 - 10
4 u = 28
1 u = 28 ÷ 4 = 7
Number of mangosteens at first
= 6 u
= 6 x 7
= 42
Answer(s): 42
