Question

2. In a class of 49 students , no.
no of girls is 3/5 of no. of boys
Find the no. of boys in the class. ​

Answer 1

Answer:

let boys =x

then girls=3/5th of boys= 3/5(x)

boys+ girls =49

$x + (3 \div 5) \times x = 49 \\ x + (3x \div 5) = 49 \\ (5x + 3x) \div 5 = 49 \\ 8x \div 5 = 49 \\ 8x = 49 \times 5 \\ 8x = 245 \\ x = 245 \div 8 \\ x = 30.62$