SOLUTION: 1)an ice cream vendor buys 250 ice creams cups at the rate of rupees 7 per cup.due to bad weather 10 cups got spoiled he sold the remaining ice cream cups at 2 for rupees 17.find h

Question 1099805: 1)an ice cream vendor buys 250 ice creams cups at the rate of rupees 7 per cup.due to bad weather 10 cups got spoiled he sold the remaining ice cream cups at 2 for rupees 17.find his gain or loss percent.
2)what principal will amount to rupees 13680 in 1 year and 9 months at 8%p.a.?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
1)250 x 7=1750 cost for cones
240/2 x 17=2040
2040-1750/250=1.16, or 16% profit per cone
2) 13680=n*(1+0.08)^1-9/12
13680=n*(1.08)^1.75
ln 13680=ln n + ln(1.08)^1.75=ln n + 1.75 ln 1.08
ln n=9.3890083691883168863468258972402
n=e^9.3890083691883168863468258972402=11,956.23 rupees to start with
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