On Saturday, there were 25 more adults than children at the fair. On Sunday, the number of adults decreased by 60% and the number of children decreased by 80%. There were 19 people on Sunday. How many adults were there on Sunday?
| |
Adults |
Children |
Total |
Comparing adults
and children at first |
25 more |
|
|
| Before |
5 u |
+ 25 |
5 u |
|
| Change |
- 3 u |
- 15 |
- 4 u |
|
| After |
2 u |
+ 10 |
1 u |
19 |
60% =
60100 =
35 60% x 25 =
35 x 25 = 15
25 - 15 = 10
80% =
80100 =
45 Total number of people on Sunday
= 2 u + 10 + 1 u
= 3 u + 10
3 u + 10 = 19
3 u = 19 - 10
3 u = 9
1 u = 9 ÷ 3 = 3
Number of adults on Sunday
= 2 u + 10
= 2 x 3 + 10
= 6 + 10
= 16
Answer(s): 16
