CAT Quantitative Ability Questions | CAT Algebra questions

CAT/1996

Question . 186

Once I had been to the post-office to buy stamps of five rupees, two rupees and one rupee. I paid the clerk Rs 20, and since he did not have change, he gave me three more stamps of one rupee. If the number of stamps of each type that I had ordered initially was more than one, what was the total number of stamps that I bought?

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Explanatory Answer

Method of solving this CAT Quantitative Ability Question from Algebra question

(a) The number of stamps that were initially bought were more than one of each type. Hence, the total number of stamps = 2(5 rupee) + 2(2 rupee) + 3(1 rupee) + 3(1 rupee) = 10