AL`S CLOTHING STOREBOUGHT HANDKERCHIEFS
6 FOR $10 AND SOLD THEM 4 FOR$10. THEY MAKE $60 PROFIT. HOW MANY HANDKERCHIEFS DID THEY SELL?
Profit per handkerchief = 10/4 - 10/6
= (30-20)/12 = $ 5/6 = $0.8333
Number sold x (5/6) = 60
Number sold = 360/5 = 72