Question

A rail journey of 75 km costs Rs 215. How much will a journey of 120 km cost?

Answer 1

Cost of a rail journey of 75 km = Rs. 215

Cost of a rail journey of 1 km = Rs. $\frac{215}{75}$

Cost of a rail journey of 120 km = $\frac{215}{75}\times 120=\mathrm{Rs}.344$