Discussion

 

        Column A


Together A and B can do
a job in 6 hours, and
together B and C can do
the same job in 4 hours.

        Column B

Fraction of work done
by A per hour

Fraction of work done
by C per hour
(A)Column A is larger
(B)...
(C)...
(D)...
(E)...
(F)...
*This question is included in Nova Math - Problem Set X: Word Problems, question #28

The solution is

Back to Discussions
Image Not Available
Sam Totman
Posted: 07/15/2013 05:18
I understand the answer but since fraction isn't qualified isn't it possible that A could be larger if it was a higher fraction than C. Therefore choice D would be more accurate.
Reply Reply | Edit
Image Not Available
Zoe Sultana
Contributor
Posted: 07/15/2013 14:02
Sam, why isn't fraction qualified? Nothing in the problem states that.
Comment Comment | Edit

You need to be signed in to perform that action.

Sign In