At first, there were 395 more boys than girls at the park. By 2 p.m., a total of 248 boys and girls left the park. There were as many boys as girls who left the park. In the end, there were 6 times as many boys as girls who remained behind. How many boys were at the park at first?
| |
Boys |
Girls |
Difference |
| Before |
6 u + 124 |
1 u + 124 |
395 |
| Change |
- 124 |
- 124 |
|
| After |
6 u |
1 u |
5 u |
Since there was the same number of girls and boys that left, the difference between the number of girls and boys remains unchanged.
5 u = 395
1 u = 395 ÷ 5 = 79
Number of boys in the end
= 6 u
= 6 x 79
= 474
Number of boys that left
= 248 ÷ 2
= 124
Number of boys at first
= 474 + 124
= 598
Answer(s): 598
