Question

the cost of 1 dozen pen os rs.240 and the cost of 20 notebook is rs.520. Find the ratio of a pen to a notebook

Answer 1

240/520
12/20

2880/10040

10040/2880

Answer 2

cost of 1 pen=240/12=20
cost of 1 notebook=520/20=26
ratio=20/26=10:13