Question

t=total no.of students

b=no.of boys

g=no.of girls

g=40% of t , b=g+40,t=?

Answer 1

is this the approx value of b 10

Answer 2

Step-by-step explanation:

if g = 40% of t,

then b = (40% of t) + 40.

so b = (40/100)t + 40

thus b-40 = (40/100) t

thus t = b-40*(100/40)

= b-40*(5/2)

= 5b/2 - 100