Please help me in all questions Determine the value of x if

Determine the value of x if 3x:x::16:4 Determine value of x if 12x:x::16:4 Determine the value of x if 2x::6:12 Make t the subject of equation expressed in simplest possible form if t + 2t = 4t - 1

Solution

we know that

a:b :: c:d

another form for this is

a/b = c/d

So applying this to our problem

3x/x = 16/4

Now x cancels ,

So it has no solution

Answer- No solution