On Tuesday, there were 30 more children than adults at the funfair. On Wednesday, the number of children increased by 80% and the number of adults decreased by 60%. There were 186 people on Wednesday. How many adults were there on Tuesday?
| |
Children |
Adults |
Total |
Comparing children
and adults at first |
30 more |
|
|
| Before |
5 u |
+ 30 |
5 u |
|
| Change |
+ 4 u |
+ 24 |
- 3 u |
|
| After |
9 u |
+ 54 |
2 u |
186 |
80% =
80100 =
45 80% x 30 =
45 x 30 = 24
30 + 24 = 54
60% =
60100 =
35 Total number of people on Wednesday
= 9 u + 54 + 2 u
= 11 u + 54
11 u + 54 = 186
11 u = 186 - 54
11 u = 132
1 u = 132 ÷ 11 = 12
Number of adults on Tuesday
= 5 u
= 5 x 12
= 60
Answer(s): 60
