Could someone with the last 3 i'm really really lost

4.
gold = 150/360 = 42%0.42(60) = 25
silver = 90/360 = 25%...0.25(60) = 15
bronze = 120/360 = 33%...0.33(60) = 20

5. 
radio = 50/360 = 14%0.14(270,000) = 37,800
internet = 90/360 = 25%...0.25(270,000) = 67,500
t.v. = 75/360 = 21%...0.21(270,000) = 56,700
magazines = 145/360 = 40%...0.40(270,000) = 108,000

6. 
U.K. = 90/360 = 25%0.25(2000) = 500
Japan = 126/360 = 35%..0.35(2000) = 700
other = 99/360 = 27.5%...0.275(2000) = 550
U.S.A. = 45/360 = 12.5%...0.125(2000) = 250