Question

Find the cost of 9 carats of eggs if each carate contains 12 eggs and the price of an egg is ₹7.

Answer 1

Price of 1 egg = ₹7
Total number of eggs in 9 carates = 9 $\times$ 12
= 108
Cost of 108 eggs = ₹7 $\times$ 108
By using the box method:
$$\begin{array}{ccc}108\times 7& 100& 8\\ 7& 700& 56\end{array}$$
= 700 + 56 = ₹ 756.