To answer this question we need to have the rates for all 7 calls and the duration of all 7 calls, or we need to tal time of all 7 calls and price /min (if rate for all calls is same)

(1) This gives us the min duration of each call as 2min, but it neither gives us total duration of all these calls nor the rate for each call.

SO, INSUFFICIENT

(2) This gives us the rate for all the calls but doesnt give us the duration of the calls

SO, INSUFFICIENT

(1) and (2) together, they give us the rate/min but we still do not know the total duration of the 7 calls.

SO, INSUFFICIENT

So, answer will be E.

Hope it helps!

SajjadAhmad wrote:

What is the total cost to make 7 long distance telephone calls?

(1) The length of each call was at least 2 minutes.

(2) The rate for long distance calls is $0.32 per minute

_________________

Ankit

Check my Tutoring Site -> Brush My Quant

GMAT Quant Tutor

How to start GMAT preparations?

How to Improve Quant Score?

Gmatclub Topic Tags

Check out my GMAT debrief

How to Solve :

Statistics || Reflection of a line || Remainder Problems || Inequalities