Question

four erasers are purchased for Rs 10 find the cost of a 1 dozen erasers​

Answer 1

4 erasers=₹10

1 dozen erasers= 12 erasers

BY UNITARY METHOD,

4=10

=>12 erasers= 10/4×12

=>cost of 12 erasers= ₹30

Answer 2

answers =₹30

Step-by-step explanation:

Cost of 4 erasers =₹10

cost of 1 eraser = ₹ 10/4 = 2.5

so, cost of 1 dozen (12) erasers =

2.5×12 =. ₹30