Bunuel wrote:

If Erin, Katy and Jess have a total of $60, how much money does Jess have?

(1) Jess has twice as much money as Katy and 2/3 as much as Erin.

(2) Jess has half the total amount of money that Katy and Erin have combined.

There are three unknowns posted by the question. Those are the money possessed by each one of Erin, Katy and Jess.

So, in oder to find out the amount that Jess has, we should either have each individual values of atleast two variables or we know the relation of two variable with any one.

Both statements give us the relationship among the three variables. We can substitute a single variable and find out the value.

Hence, answer will be D. Each statement alone is sufficient.

Sent from my iPhone using

GMAT Club Forum mobile app