During a class function,
58 of the pupils were girls and the rest were boys. Halfway, 574 more boys joined in the function and there were
310 as many girls as boys. Find the number of pupils at the class function in the end.
|
Girls |
Boys |
Before |
5x3 = 15 u |
3x3 = 9 u |
|
|
+ 574 |
After |
3x5 = 15 u |
10x5 = 50 u |
The number of boys remains unchanged.
LCM of 3 and 5 = 15.
Number of more boys who joined in
= 50 u - 9 u
= 41 u
41 u = 574
1 u = 574 ÷ 41 = 14
Number of pupils in the end
= 15 u + 50 u
= 65 u
= 65 x 14
= 910
Answer(s): 910