Class 9 | Ganita Manjari | Ch. 3 The World of Numbers
Class 9 | Ganita Manjari | Ch. 3 The World of Numbers Solutions (NCERT Textbook Page No. 43) EXERCISE SET 3.1 Q. 1. A merchant in the port city of Lothal is exchanging bags of spices for copper ingots. He receives 15 ingots for every 2 bags of spices. If he brings 12 bags of spices to the market, how many copper ingots will he leave with? Sol. Given: 2 bags of spices = 15 copper ingots 12 bags of spices = ? copper ingots By Unitary Method First, find the number of copper ingots for 1 bag. 2 bags of spices = 15 copper ingots 1 bags of spices = 15/2 copper ingots = 7.5 copper ingots For 12 bags of = 12 × 7.5 = 90 copper ingots The merchant will receive 90 copper ingots for 12 bags. Q. 2. Look at the sequence of numbers on one column of the Ishan...