The average price of three items of furniture is Rs. 5,300. If their prices are in the ratio 3 : 5 : 7, the price of the cheapest item (in Rs.) is:

Correct option is B

Given:

Average price = 5300

Ratio = 3 : 5 : 7

Concept Used:

Average × number of items = total price

Solution:

Sum of ratio = 3 + 5 + 7 = 15

Cost of 1 part = 15900 ÷ 15 = 1060

Cheapest item = 3 parts = 3 × 1060 = 3180

Price of cheapest item = Rs. 3180

Alternate Solution (Short Trick):​

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