6) 65 * 7200 /100 = 4680 $
7) OP=price/ (1− Discount percentage)
original price = 32.89 / (1- 0.85)
= 219.26 $
8)Let the total people in crew is x of which 8(66.2/3%) are men.
x *(66.2/3/ 100 ) =8 or
(x⋅200/3 )*(1 /100)=8 or
x=3 * (8/2)=12
there are 12 people in the crew
9) 12,800 * 15 /100 = 1920$ taken as taxes