Question

Fan And medal... can someone explain??

Answer 1

????

Answer 2

Let x = number of litres of 30% acid used
.12 x 14 + .3 x = .18( 14+x)

1.68 + .3x = 2.52 + .18x
.3x - .18x = 2.52 - 1.68
.12 x = .84
x = .84 /.12
= 7

Therefore 7 litres of 30% acid was mixed in

Answer 3

A?

Answer 4

Yeah

Answer 5

\[14*\frac{ 12 }{100 }+x*\frac{ 30 }{100 }=\left( x+14 \right)*\frac{ 18 }{ 100 }\]
solve and get the answer.

Answer 6

thanks @surjithayer and @passive13... o and thanks @gdogthegirl