Data Sufficiency Kaplan..

[Gmatterz]

if b is not equals zero
and a>b

Is a>c?

1)a/b>c/b

2)5ab>6bc

Can anybody please help me out with the approach of solving the above DS question.

Thanks
Gmatterz

[mjjking]

So... b is not 0. And a>b... a>c?
number 1. tells us that a/b > c/b ... but if a>b and hence a/b>1 it means that also a/c>1 hence a>c.
number 2 says that 5ab>6bc which can be written as 5a > 6c. This means that a>c.

hence both answers alone are sufficient.

[Gmatterz]

The OA is E...Really confused...

[Ian Stewart]

When analysing the statements, be sure to consider the possibility that b is negative. For example, when considering the first statement:

a/b > c/b

If b > 0, we can multiply both sides by b to find:

If b > 0, then a > c

However, if b is negative, when we multiply both sides by b, we need to reverse the inequality:

If b < 0, then a < c

The analysis is similar for the second statement.

[Gmatterz]

Hi Ian ,
Thanks a Million for clearing my confusion.Its crystal clear now why the anwser would be E.

Thanks
Gmatterz