Rashid buys three books for Rs.16 each four books for Rs.23 each, what will be the average price of books?

Total Books=3+4=7
Total Price of 3 Books=3*16=48
Total Price of 4 Books=4*23=92
Total Price of Books=48+92=140
Average=Total Price / Total Boks
Average=140/7
Average=20