Question

Three bags of soyabean seeds cost Rs 2250. Find the cost of 7 such bags.

Answer 1

Given:
Cost of 3 bags of soya bean seeds = Rs 2250
Now, let the cost of 7 bags of soya bean seeds be Rs x.
∴ Ratio of the numbers of bags of soya bean seeds = Ratio of their costs

$$\begin{gathered} \Rightarrow 3:7=2250:x \\ =\frac{3}{7}=\frac{2250}{x} \\ \because 2250=3\times 750 \\ \therefore x=7\times 750=5250 \end{gathered}$$

Thus, the cost of 7 bags of soya bean seeds is Rs 5250.