Question 103167
A train has a total of 152 seats. The number of coach-class seats is 5 more than six times the number of first-class seats. How many of each type of seat are there on the train?
x=first-class seats
y=6x+5
x+y=152
x+(6x+5)=152
7x+5=152
7x=147
x=21 - first class seats
y=6(21)+5
y=126+5
y=131 - coach-class seats
:)