Question

a person buys 20kg of rice ,10 kg of ata , 5 kg of pulses, 4 kg of sugar, 2 kg of salt for a month. rice cost rs 16 per kg, ata cost rs 15 per kg , pulses cost rs 35 per kg, sugar cost rs 21 per kg and salt cost rs 8 per kg. using matrix multiplication find the amount of money spend by a person

Answer 1

Answer:

cost of 1 kg rice = 16 rs

cost of 20 kg = 16 * 20 = 320 rs

cost of 1 kg ata = 15 rs

cost of 10 kg ata = 15 * 10 = 150 rs

cost of 1 kg pulses = 35 rs

cost of 5 kg pulses = 35 * 5 = 105 rs

cost of 1 kg sugar = 21 rs

cost of 4 kg sugar = 21 * 4 = 84 rs

cost of 1 kg salt = 8 rs

cost of 2 kg salt = 8 * 2 = 16 rs

total cost = 320 + 150 + 105 + 84 + 16 = 685 rs