What is the number of students in the stadium?

Question

The number of students in the stadium is 4/3 as much as the number of students in the hall. 3/5 of the number of students in the stadium are girls and 5/7 of the number of students in the hall are boys. If there are 216 more girls in the stadium than in the hall, what is the number of students in the stadium?

Answer 1

s represents # in stadium

h represents # in hall

s = 4h/3

(3/5)(4h/3) = g_stadium

5h/7 = b_hall ⇒

2h/7 = g_hall

g_stadium = g_hall + 216

(3/5)(4h/3) = 2h/7 + 216

 

Can you solve for h and answer?