• # question_answer 27) Cost of 4 dozens bananas is Rs. 60. How many bananas can be purchased for Rs. 12.50?

We know that, 1 dozen = 12 units Given, in Rs. 60, number of bananas that can be purchased = 4 dozens$=4\times 12=48$ [$\because$1 dozen = 12 units] $\therefore$ In Rs. 1, number of bananas that can be purchased$=\frac{48}{60}=\frac{48\div 12}{60\div 12}=\frac{4}{5}$ [$\because$HCF of 48 and $60=2\times 2\times 3=12$] $\therefore$ In Rs. 12.50, number of bananas that can be purchased$=\frac{4}{5}\times 12.50=\frac{50}{5}=10$ Hence, 10 bananas can be purchased for Rs. 12.50.