GMAT OFFICIAL GUIDE PS Solution: We start with the formula for calculating the average. average = sum/quantity We are given that the initial quantity is n days and that …
GMAT OFFICIAL GUIDE PS Solution: We can classify this problem as a “catch up and pass” rate question. This means that one car is catching up to the other …
GMAT OFFICIAL GUIDE PS Solution: We are first given that John worked for 10 hours and that Mary worked for 2 hours less than John. So we can say: …
GMAT OFFICIAL GUIDE PS Solution: This is an interesting question because we are immediately given the option to insert any prime number we wish for p. Since this is …
GMAT OFFICIAL GUIDE PS Solution: We can start by creating some variables. Q = quantity of towels sold P = price per towel sold Next we can set up …
GMAT OFFICIAL GUIDE PS Solution: This problem does contain a diagram that looks like the following: We are given that the line y = x is a perpendicular bisector …
GMAT OFFICIAL GUIDE PS Solution: For this overlapping sets problem we can use the following equation: Total percent = % in category A + % in category B – …
GMAT OFFICIAL GUIDE PS Solution: The first thing we want to do is set up the ratio of the original solution using variable multipliers. soap : alcohol : water …
