The average price of three items is Rs. 630. If their price is in the ratio 5 :7 :9, then the price of the costliest item is?
Answer & explanation
Correct answer: option 3
ratio is 5 : 7 : 9
5R +7R + 9R = 21R
21R = 630
1R = 30
costliest item = 9R = 9 × 30 = 270
so price of costliest item is Rs.270