Answer:

84

Step-by-step explanation:

Given:

• The cost of 6 box is Rs. 42

To Find:

The cost of a Dozen Box.

Calculation:

1 dozen = 12

Using Unitary Method,

Cost of 6 box is = Rs. 42

Cost of 1 box is = Rs. 42/6 = 7

Cost of 12 box is = Rs. 7 x 12 = 84

Hence, The cost of A Dozen box is Rs. 84. ( ans. )

Answer:

84

Step-by-step explanation:

12 in dozen

and 6 box

so 6+6 =12

same other side

42+42=84