Total round trip fare for group of 5 tourist without discount
\(= 5 \times 200 = Rs.1000\)
(i) Discount for round trip = 10%of total fare \(= \frac{{10}}{{100}} \times 1000 = Rs.\;100\)
(ii) Discount for having a group of 5 tourist = 10%of total fare \(= \frac{5}{{100}} \times 100 = Rs.\;500\)
Total discount = Discount for round + Discount for having a group of 5 tourist.
\(= 100 + 50 = Rs.150\)
Thus, the net round trip fare for group of 5 tourist after discount is
Net fare = total fare-total discount
\(\begin{array}{l}
= Rs.1000 - Rs.150\\
= Rs.\;850
\end{array}\)