Question

A dozen of bananas cost rs 18. What is the cost of one banana?

Answer 1

banana                                cost
12                                         18
1                                              ?

? = 18 divided by 12 = 3/2 
cost of 1 = 3/2rs

Answer 2

1 dozen = 12 units


Cost of 12 bananas = 18


Cost of 1 banana = 18/12 = 3/2 = 1•5