The number of mangosteens is 5 times as many as the number of tomatoes. After buying another 30 mangosteens and 102 tomatoes, the number of mangosteens is the same as the number of tomatoes. What is the number of mangosteens at first?
| |
Mangosteens |
Tomatoes |
| Before |
5 u |
1 u |
| Change |
+ 30 |
+ 102 |
| After |
5 u + 30 |
1 u + 102 |
The number of mangosteens and tomatoes is the same in the end.
5 u + 30 = 1 u + 102
5 u - 1 u = 102 - 30
4 u = 72
1 u = 72 ÷ 4 = 18
Number of mangosteens at first
= 5 u
= 5 x 18
= 90
Answer(s): 90
