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General Aptitude
10.1 Problems on H.C.F and L.C.M - General Questions

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The price of 10 chairs is equal to that of 4 tables. The price of 15 chairs and 2 tables together is Rs. 4000. The total price of 12 chairs and 3 tables is:

A. Rs. 3500

B. Rs. 3750

C. Rs. 3840

D. Rs. 3900

E. None of the above

View Answer

Correct choice: D

Explanation:

Let the cost of a chair and that of a table be Rs. x and Rs. y respectively.

Then, 10x = 4y or y = 5/2x.

∴ 15x + 2y = 4000

⇒ 15x + 2 x 5/2x = 400

⇒ 20x = 4000

∴ x = 200.

so, y = (5/2 × 200) = 500

Hence, the cost of 12 chairs and 3 tables = 12x + 3y

= Rs. (2400 + 1500)

= Rs. 3900.

12 / 45

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General Aptitude 10.1 Problems on H.C.F and L.C.M - General Questions

General Aptitude
10.1 Problems on H.C.F and L.C.M - General Questions