On Tuesday, there were 35 more children than adults at the bowling alley. On Wednesday, the number of children increased by 80% and the number of adults decreased by 60%. There were 118 people on Wednesday. How many adults were there on Tuesday?
|
Children |
Adults |
Total |
Comparing children and adults at first |
35 more |
|
|
Before |
5 u |
+ 35 |
5 u |
|
Change |
+ 4 u |
+ 28 |
- 3 u |
|
After |
9 u |
+ 63 |
2 u |
118 |
80% =
80100 =
45 80% x 35 =
45 x 35 = 28
35 + 28 = 63
60% =
60100 =
35 Total number of people on Wednesday
= 9 u + 63 + 2 u
= 11 u + 63
11 u + 63 = 118
11 u = 118 - 63
11 u = 55
1 u = 55 ÷ 11 = 5
Number of adults on Tuesday
= 5 u
= 5 x 5
= 25
Answer(s): 25