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 question: 4x=5y, find value of 4x or 5y
(1) y = .8x => 4x = 5y.... INSUFF
(2) x+y = 43.75; also 4x = 5y
solve for x or y ...SUFF