You Need 25 Ft ³ of Cement to Make 70 $\frac { 5 } { 14 }$

Multiple Choice

You need 25 ft ³ of cement to make 70 ft ³ of concrete. Find the ratio of volume of concrete to volume of cement.

A) $\frac { 5 } { 14 }$
B) $\frac { 10 } { 9 }$
C) $\frac { 20 } { 11 }$
D) $\frac { 16 } { 7 }$
E) $\frac { 14 } { 5 }$