On Saturday, there were 20 more adults than children at the fair. On Sunday, the number of adults increased by 55% and the number of children decreased by 65%. There were 221 people on Sunday. How many children were there on Saturday?
| |
Adults |
Children |
Total |
Comparing adults
and children at first |
20 more |
|
|
| Before |
20 u |
+ 20 |
20 u |
|
| Change |
+ 11 u |
+ 11 |
- 13 u |
|
| After |
31 u |
+ 31 |
7 u |
221 |
55% =
55100 =
1120 55% x 20 =
1120 x 20 = 11
20 + 11 = 31
65% =
65100 =
1320 Total number of people on Sunday
= 31 u + 31 + 7 u
= 38 u + 31
38 u + 31 = 221
38 u = 221 - 31
38 u = 190
1 u = 190 ÷ 38 = 5
Number of children on Saturday
= 20 u
= 20 x 5
= 100
Answer(s): 100
