The first row of a theater has 16 seats. There are 3 more seats in each row thereafter. How many seats are in the 25th row/

Question

asked Jan 9, 2022 124k views

1 Answer

Ardal · Answer 1 · 2022-01-15T04:33:36+0000

Answer: 88

Explanation:

Given

The first row has 16 seats

then there are 3 more seats in each row

this follows an AP with the first term
a=16 and common difference
d=3

So, no of seats in the 25 th row is

$\Rightarrow a_(25)=a+24d\\\Rightarrow a_(25)=16+3* 24\\\Rightarrow a_(25)=88$

Thus, there are 88 seats in the 25 th row