On Tuesday, there were 40 more children than adults at the funfair. On Wednesday, the number of children increased by 60% and the number of adults decreased by 80%. There were 82 people on Wednesday. How many adults were there on Tuesday?
| |
Children |
Adults |
Total |
Comparing children
and adults at first |
40 more |
|
|
| Before |
5 u |
+ 40 |
5 u |
|
| Change |
+ 3 u |
+ 24 |
- 4 u |
|
| After |
8 u |
+ 64 |
1 u |
82 |
60% =
60100 =
35 60% x 40 =
35 x 40 = 24
40 + 24 = 64
80% =
80100 =
45 Total number of people on Wednesday
= 8 u + 64 + 1 u
= 9 u + 64
9 u + 64 = 82
9 u = 82 - 64
9 u = 18
1 u = 18 ÷ 9 = 2
Number of adults on Tuesday
= 5 u
= 5 x 2
= 10
Answer(s): 10
