Question

The ratio between the number of books and pencils is 6:5 and the ratio of cost of per book and pencil is 4:3 then find the percentage by which total cost of book is greater than the total cost of pencil.

A 70% Correct Answer Incorrect Answer
B 50% Correct Answer Incorrect Answer
C 60% Correct Answer Incorrect Answer
D 40% Correct Answer Incorrect Answer
E 80% Correct Answer Incorrect Answer

Solution

Number = books: Pencil = 6x : 5x Cost = books: pencil = 4y : 3y Total cost = books: Pencil = 24xy : 15xy Required % = [(24xy-15xy)/15xy]×100 = 60%

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