Question

If X/Y = 1/9 and Y/Z = 9/8 then Z/X = ?

A) 1/648
B) 1/8
C) 8/81
D) 81/8
E) 8

Could you explain how to do this.

Answer 1

OK. If you need to find the equal equation for z/x you have to take the parts from other equations. so you know that z=8 and x=1 so z/x= 8 over 1=8/1= 8/1 once simplified equals 8. Your pretty much taking the numbers along that you need for the equation.