Six tables and twelve chairs were bought for ₹7800. If the average price of a table is ₹750, then the average price of a chair would be:
Answer & explanation
Correct answer: option 2
Cost of (6 tables) + (12 chairs) = 7800 ..... (i)
Average price of table = 750
⇒ Average price = \(\frac{cost\;of\;6\;tables}{6}\)
⇒ 750 = \(\frac{cost\;of\;6\;tables}{6}\)
⇒ Cost of 6 tables = 750 × 6 = 4500
In equation (i);
⇒ 4500 + cost of 12 chairs = 7800
⇒ Cost of 12 chairs = 7800 - 4500 = 3300
Average price of a chair = \(\frac{3300}{12}\) = Rs.275