number of girls in class --- x
number playing basketball = 3x/4
number playing volley ball = 4x/7
number playing both = 27
3x/4 + 4x/7 - 27 = x
times 28, the LCD
24x + 16x - 756 = 28x
12x = 756
x = 63 , huge class!
Valley ball ?????
¾ of the girls in SS2 play basketball and 4 over 7 play Valley ball. Every girl plays at least one of these games. If 27 Girls play both games, how many girls are there in the class
1 answer