190 people went to a theme park.
35 were children. Some adults left halfway and the ratio of the number of children to the number of adults became 6 : 1. How many adults left the theme park halfway?
| |
Children |
Adults |
Total |
| Before |
3x2 =
6 u |
2x2 =
4 u |
5x2 =
10 u |
| Change |
|
- ? |
|
| After |
6 u |
1 u |
|
Fraction of the people that were adults at first
= 1 -
35 =
25 Number of children remains unchanged. Make the number of children the same. LCM of 3 and 6 is 6.
Total number of people at first = 10 u
10 u = 190
1 u = 190 ÷ 10 = 19
Number of adults who left halfway
= 4 u - 1 u
= 3 u
= 3 x 19
= 57
Answer(s): 57
