statistics
posted by rabia on .
In a show the rate of an adult pass is Rs. 20 more then the children pass. when a company sold 50 adult passes and 200 children passes,the amount collected is rs.2250. find the price of an adult pass?

Let A = price of adult pass and C = price of child's pass.
A = C + 20
50A + 200C = 2250
Substitute C+20 for A in second equation and solve for C. Insert that value into the first equation and solve for A. Check by inserting both values into the second equation. 
for a charity show the rate of adult passes Rs.20 more than the children pass.when a company sold 50 adult and 200 children passes,the amount collected is Rs.2250.find the price of an adult pass.