Nat 5 algebra problem

Jun 2019
1
0
uk
'100 people are on a plane. Some people have tickets for 70 POUNDS and some have tickets for 50 POUNDS. The total raised sum from the plane tickets was 6240 POUNDS. How many people bought 70 POUND seats and how many people bought 50 POUND seats?''
 

skeeter

Math Team
Jul 2011
3,356
1,848
Texas
'100 people are on a plane. Some people have tickets for 70 POUNDS and some have tickets for 50 POUNDS. The total raised sum from the plane tickets was 6240 POUNDS. How many people bought 70 POUND seats and how many people bought 50 POUND seats?''
let x = number of 70 lb tickets

100-x = number of 50 lb tickets

70x + 50(100-x) = 6240

solve for x, the number of 70 lb tickets, then determine 100-x, the number of 50 lb tickets
 

Denis

Math Team
Oct 2011
14,592
1,026
Ottawa Ontario, Canada
'100 people are on a plane. Some people have tickets for 70 POUNDS and some have tickets for 50 POUNDS. The total raised sum from the plane tickets was 6240 POUNDS. How many people bought 70 POUND seats and how many people bought 50 POUND seats?''
Your teacher was on the plane...so was unable to teach?