# Question

When we solve for *d* (total distance), don't we need to divide total *d* by 2 to get the ACTUAL distance to his job—not round trip? Maybe I am misinterpreting, but the question asks for the distance to his job (if the question wanted 'round trip', shouldn't it ask 'what is the total distance travelled?'

# Answer

In the answer explanation, we set *d* = distance *to* work. So "*d*" is the one-way distance; therefore, when we eventually solve for *d*, we don't need to divide it by two.

We expressed the time to work as *d*/45 and the time back from work as* d*/60 and made the equation:

*d*/45 + *d*/60 = 2

When we solve, we get *d* = 360/7, the distance between David's home and work.

** **

# Link

http://gre.magoosh.com/questions/329

## Comments