There was an equal number of girls and boys in the computer lab. When 10% of the boys left the computer lab, there were 10 more girls than boys remaining in the computer lab. How many children remained in the computer lab?
|
|
Girls
|
Boys
|
|
Before
|
10 u
|
10 u
|
|
Change
|
|
- 1 u
|
|
After
|
10 u
|
9 u
|
10% =
10100 =
110Number of boys in the end
= 10 u - 1 u
= 9 u
Number of more girls than boys remaining in the computer lab
= 10 u - 9 u
= 1 u
1 u = 10
Total number of students remaining in the computer lab
= 10 u + 9 u
= 19 u
= 19 x 10
= 190
Answer(s): 190
