Question

Tina baked 3 trays of 20 cookies. After that she packed them equally in 4 boxes. If each cookie costs ₹12, what is the cost of each box?

Answer 1

Totally number of cookies baked = 20 + 20 + 20
= 3 × 20 = 60

Number of cookies in each box = total number of cookies ÷ Number of boxes
= 60 ÷ 4 = 15 cookies in each box

Cost of each box = Cookies in a box x Cost of one cookie
= 15 x ₹12

Using box method of multiplication
15 x ₹12 = 100 + 50 + 20 + 10 = ₹180

Thus, the cost of each box of cookies = ₹180