Question

if 23 people had lunch in a hotel and the rate per lunch is same for all, and it costs Rs3105, how much will it cost for 60 people have lunch in the same hotel at the same rate?

Answer 1

$$\begin{gathered} \cos toflunchfor23persons=Rs.3105 \\ \cos toflunchfor1person=Rs.\left(\frac{3105}{23}\right)=Rs.135 \\ \cos toflunchfor60persons=Rs.(135\times 60)=Rs.8100 \end{gathered}$$