Silviax
The total charge to rent a car for one day from Company J consists of a fixed charge of $15.00 plus a charge of $0.20 per mile driven. The total charge to rent a car for one day from Company K consists of a fixed charge of $20.00 plus a charge of $0.10 per mile driven. Is the total charge to rent a car from company J for one day and drive it x miles less than $25.00?
(1) The total charge to rent a car from Company K for one day and drive it x miles is less than $25.00
(2) x < 50
And this is exactly why I am having a super hard time with data sufficiency questions. It is NOT mentioned in the question prompt at all that the same number of miles is driven with the car rented from company J and the one rented from company K.
Statement No. 1 says absolutely nothing about company J at all. How can this be sufficient?
Of course I could have solved it if they would have stated that x miles driven with the K company car and J company car are the same. X is variable and can express any number. It is not a constant. How could you possibly assume it is the same for both cases?
I am totally baffled here!
x there is some specific number even though we don't know what it is.
The total charge to rent a car for one day from Company J consists of a fixed charge of $15.00 plus a charge of $0.20 per mile driven. The total charge to rent a car for one day from Company K consists of a fixed charge of $20.00 plus a charge of $0.10 per mile driven. Is the total charge to rent a car from company J for one day and drive it x miles less than $25.00?Is the total charge to rent a car from company J for one day and drive it x miles less than $25.00: is 15 + 0.2x < 25 --> is x < 50?
(1) The total charge to rent a car from Company K for one day and drive it x miles is less than $25.00.
20 + 01x < 25 --> x < 50. Sufficient.
(2) x < 50. Sufficient.
Answer: D.
Hope it's clear.