Question

The cost of 18 bananas at the rate of 4 rupees per dozen will be

Answer 1

12 banana =4 rupee
18 banana =?
u can cross multiply
(18×4)÷12 = 72÷12
=6

Answer 2

one dozen=12 bananas

half dozen=6bananas

then,12 bananas+6bananas=18 bananas

we know,cost of one dozen=4 rupees.

therefore,cost of 18 bananas=6 rupees(4rs+2rs)