GMAT Problem Solving Question 31: Distance and rate

 
Try the following GMAT Problem Solving question that tests your understanding of how to set up distance, rate, and time problems on the GMAT.

Question 31:

In racing over a given distance $d$ at uniform speed, $A$ can beat $B$ by $20$ yards, $B$ can beat $C$ by $10$ yards, and $A$ can beat $C$ by $28$ yards. Then $d$, in yards, equals:

1. $\quad \textrm{not determined by the given information}$
2. $\quad 58$
3. $\quad 100$
4. $\quad 116$
5. $\quad 120$