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A market woman sells oil in cylindrical tins 10cm deep and 6cm in diameter at…

A market woman sells oil in cylindrical tins 10cm deep and 6cm in diameter at N15.00 each. If she bought a full cylindrical jug 18cm deep and 10cm in diameter for N50.00, how much did she make by selling all the oil?
  • A.
    N62.50
  • B.
    N35.00
  • C.
    N31.00
  • D.
    N25.00
Correct Answer: Option D
Explanation

V(pi)r2h = (pi)(3)2(10) = 90(pi)cm3
V = (pi)(5)2 x 18 = 450(pi)cm3
No of volume = (frac{450pi}{90pi})
= 5
selling price = 5 x N15 = N75
profit = N75 – N50 = N25.00

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