The number of girls in the parade square was
25 that of the boys. There were 264 more boys than girls. After some boys had left the parade square, the number of girls at the parade square was twice the number of the remaining boys. How many boys left the parade square?
| |
Boys |
Girls |
Difference |
| Before |
5 u |
2 u |
3 u |
| Change |
- ? |
|
|
| After |
1 u |
2 u |
|
The number of girls at first and in the end remains unchanged.
Number of more boys than girls at first
= 5 u - 2 u
= 3 u
3 u = 264
1 u = 264 ÷ 3 = 88
Number of boys that left
= 5 u - 1 u
= 4 u
= 4 x 88
= 352
Answer(s): 352
