CBSE Class 9MathematicsNumber System
Two friends Pankaj and Siddharth went to an antique store to purchase 3 4 old coins of single type. They finally short-listed coins of two types A and B and decided to choose the one having lowest price. On being asked the price, the shopkeeper told them coin ‘A’ is priced at 2 7 each and coin B is priced at 3 5 each. Pankaj helped Siddharth to select the type of coin on the basis of price. They further d
Step-by-step solution
(i) Total number of coins = 3 4 Price of coin A = 2 7 each Total price of coin A = 3 4 ×2 7 Price of coin B = 3 5 each Total price of coin B = 3 5 × 3 4 Since 2 7 < 3 5 , Price of coin A < Price of coin B Hence, finally they bought the coin A and total price paid to shopkeeper is = 3 4 × 2 7 = 81 × 128 = 10,368 (ii) Number of coins each friend received = = 3 4 – 2 = 3 2 = 9 (iii) Values depicted are: • Proper use of mathematical knowledge. • Honesty, friendship.