Question

75% x X + 3/4 x X + X = 30

Answer 1

\(75\%x+\frac{3}{4}x+x=30\)

\(\frac{3}{4}x+\frac{3}{4}x+x=30\)

\(x\left(\frac{3}{4}+\frac{3}{4}+1\right)=30\)

\(x\left(\frac{3}{2}+1\right)=30\)

\(x\left(\frac{3}{2}+\frac{2}{2}\right)=30\)

\(\frac{5}{2}x=30\)

\(x=30\div\frac{5}{2}\)

\(x=30\times\frac{2}{5}\)

\(x=12\)

Answer 2

75% . x + 3/4 . x + x = 30

.<=> 0,75 . x + 0,75 . x + x . 1 = 30

<=> (0,75 + 0,75 + 1) x = 30

<=> 2,5 x = 30

<=> x = 30 : 2,5

<=> x = 12 

Answer 3

x=12 nha