Data Sufficiency

If Jim earns x dollars per hour, it will take him 4 hours to earn exactly enough money to purchase a particular jacket. If Tom earns y dollars per hour, it will take him exactly 5 hours to earn enough money to purchase the same jacket. How much does the jacket cost?

(1) Tom makes 20% less per hour than Jim does.

(2) x + y = $43.75

From the question we know 4x=5y

(1) y = 0.8x - -> 4x = 5y (We already know this) - Insufficent

(2) x+y = 43.75 - - 2 eqns, 2 unknowns - price can be calculated - Sufficient - B