On Tuesday, there were 15 more adults than children at the fair. On Wednesday, the number of adults increased by 80% and the number of children increased by 60%. There were 61 people on Wednesday. How many adults were there on Tuesday?
|
Adults |
Children |
Total |
Comparing adults and children at first |
15 more |
|
|
Before |
5 u |
+ 15 |
5 u |
|
Change |
+ 4 u |
+ 12 |
+ 3 u |
|
After |
9 u |
+ 27 |
8 u |
61 |
80% =
80100 =
45 80% x 15 =
45 x 15 = 12
15 + 12 = 27
60% =
60100 =
35 Total number of people on Wednesday
= 9 u + 27 + 8 u
= 17 u + 27
17 u + 27 = 61
17 u = 61 - 27
17 u = 34
1 u = 34 ÷ 17 = 2
Number of adults on Tuesday
= 5 u + 15
= 5 x 2 + 15
= 10 + 15
= 25
Answer(s): 25