Practicing Success
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: |
₹250 ₹275 ₹260 ₹280 |
₹275 |
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 |