There were 4 times as many boys as girls at a function. After 24 girls left, the number of boys was 20 times the number of the remaining girls. How many people attended the function?
| |
Boys |
Girls |
Total |
| Before |
4x5 =
20 u |
1x5 =
5 u |
25 u |
| Change |
|
- 24 |
|
| After |
20 u |
1 u |
|
The number of boys at first and in the end remains unchanged. Make the number of boys the same. LCM of 4 and 20 is 20.
Number of girls who left
= 5 u - 1 u
= 4 u
4 u = 24
1 u = 24 ÷ 4 = 6
Number of people who attended the function
= 20 u + 5 u
= 25 u
= 25 x 6
= 150
Answer(s): 150
