On Thursday, there were 25 more adults than children at the theme park. On Friday, the number of adults decreased by 80% and the number of children decreased by 60%. There were 26 people on Friday. How many adults were there on Friday?
| |
Adults |
Children |
Total |
Comparing adults
and children at first |
25 more |
|
|
| Before |
5 u |
+ 25 |
5 u |
|
| Change |
- 4 u |
- 20 |
- 3 u |
|
| After |
1 u |
+ 5 |
2 u |
26 |
80% =
80100 =
45 80% x 25 =
45 x 25 = 20
25 - 20 = 5
60% =
60100 =
35 Total number of people on Friday
= 1 u + 5 + 2 u
= 3 u + 5
3 u + 5 = 26
3 u = 26 - 5
3 u = 21
1 u = 21 ÷ 3 = 7
Number of adults on Friday
= 1 u + 5
= 1 x 7 + 5
= 7 + 5
= 12
Answer(s): 12
