I have been trying this problem for awhile but i can't see to get it.
QA hockey arena has a total seating capacity of 15 690. The first row of seats around the rink has 262 seats. The number of seats in each subsequent rowincreases by 18.
a) How mnay rows of seats are in the arena?
b) By what percent would the capacity increase if three more rows were added after the last row?
a) This is what I did;
a= 262
tn= 15 690
d=18
n= ?
tn= a+(n-1)d
15 690 = 262+(n-1)(18)
15 690 =262+18n-18
15 690= 244+18n
15446= 18n
858.1111 =n
That doesn't make sense, you can't have .111 of a seat!
QA hockey arena has a total seating capacity of 15 690. The first row of seats around the rink has 262 seats. The number of seats in each subsequent rowincreases by 18.
a) How mnay rows of seats are in the arena?
b) By what percent would the capacity increase if three more rows were added after the last row?
a) This is what I did;
a= 262
tn= 15 690
d=18
n= ?
tn= a+(n-1)d
15 690 = 262+(n-1)(18)
15 690 =262+18n-18
15 690= 244+18n
15446= 18n
858.1111 =n
That doesn't make sense, you can't have .111 of a seat!