A market woman sells oil in cylindrical tins 10... - JAMB Mathematics 1998 Question
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
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Correct Option: D
V(\pi)r2h = (\pi)(3)2(10) = 90(\pi)cm3
V = (\pi)(5)2 x 18 = 450(\pi)cm3
No of volume = (\frac{450\pi}{90\pi})
= 5
selling price = 5 x N15 = N75
profit = N75 - N50 = N25.00
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