There was an equal number of girls and boys in the gymnasium. When 5% of the boys left the gymnasium, there were 10 more girls than boys remaining in the gymnasium. How many children remained in the gymnasium?
|
Girls
|
Boys
|
Before
|
20 u
|
20 u
|
Change
|
|
- 1 u
|
After
|
20 u
|
19 u
|
5% =
5100 =
120Number of boys in the end
= 20 u - 1 u
= 19 u
Number of more girls than boys remaining in the gymnasium
= 20 u - 19 u
= 1 u
1 u = 10
Total number of students remaining in the gymnasium
= 20 u + 19 u
= 39 u
= 39 x 10
= 390
Answer(s): 390