Question

23 people had lunch in a hotel and the rate per lunch is the same for all. if it costs rs 3105 in total, how much will it cost for 60 people to have lunch in the same hotel at the same rate ?

Answer 1

Rate for 21 people to lunch=Rs 3105
Rate for 1 person to lunch =Rs 3105/21
Rate for 60 people to lunch=Rs.3015/21×60=Rs 9315

Answer 2

for 23 people it costs ₹3105
for 1 people it costs ₹ 3105/23
for 60 people it costs (3105×60) / 23₹ = 8100₹

so it will cost 8100₹ for 60 people to have lunch in the same hotel at the same rate.
Hope it helps..