Solve for z. 27/90=15/z

z = 50

Step-by-step explanation:

The equation 27/90=15/z can be written as the following if we simplify a little:

3/10=15/z.

remember 27=3*9 and 90=9*10, hence 27/90=3/10

Now lets multiply both sides by variable 'z'.

we have 3/10 * z = 15/z * z

3/10 z=15

Now lets multiply by 10/3

3/10 * z * 10/3 = 15*10/3

z = 50