On Tuesday, there were 25 more adults than children at the laser tag park. On Wednesday, the number of adults increased by 60% and the number of children increased by 80%. There were 108 people on Wednesday. How many adults were there on Tuesday?
|
Adults |
Children |
Total |
Comparing adults and children at first |
25 more |
|
|
Before |
5 u |
+ 25 |
5 u |
|
Change |
+ 3 u |
+ 15 |
+ 4 u |
|
After |
8 u |
+ 40 |
9 u |
108 |
60% =
60100 =
35 60% x 25 =
35 x 25 = 15
25 + 15 = 40
80% =
80100 =
45 Total number of people on Wednesday
= 8 u + 40 + 9 u
= 17 u + 40
17 u + 40 = 108
17 u = 108 - 40
17 u = 68
1 u = 68 ÷ 17 = 4
Number of adults on Tuesday
= 5 u + 25
= 5 x 4 + 25
= 20 + 25
= 45
Answer(s): 45