192 people went to a tourist attraction.
38 were adults. Some children left halfway and the ratio of the number of adults to the number of children became 6 : 7. How many children left the tourist attraction halfway?
| |
Adults |
Children |
Total |
| Before |
3x2 =
6 u |
5x2 =
10 u |
8x2 =
16 u |
| Change |
|
- ? |
|
| After |
6 u |
7 u |
|
Fraction of the people that were children at first
= 1 -
38 =
58 Number of adults remains unchanged. Make the number of adults the same. LCM of 3 and 6 is 6.
Total number of people at first = 16 u
16 u = 192
1 u = 192 ÷ 16 = 12
Number of children who left halfway
= 10 u - 7 u
= 3 u
= 3 x 12
= 36
Answer(s): 36
