There was an equal number of boys and girls in the canteen. When 5% of the girls left the canteen, there were 9 more boys than girls remaining in the canteen. How many children remained in the canteen?
|
|
Boys
|
Girls
|
|
Before
|
20 u
|
20 u
|
|
Change
|
|
- 1 u
|
|
After
|
20 u
|
19 u
|
5% =
5100 =
120Number of girls in the end
= 20 u - 1 u
= 19 u
Number of more boys than girls remaining in the canteen
= 20 u - 19 u
= 1 u
1 u = 9
Total number of students remaining in the canteen
= 20 u + 19 u
= 39 u
= 39 x 9
= 351
Answer(s): 351
