<span>This is an arithmetic progression, i.e. 16,18,20,22,24,26,28.......... where 16 is the number of people seats in 1st row, 18 seats in second row, 20 seats in third row and so on. The Total number of seats in 20 rows = n/2{2a+(n-1)d}. Here, d = 2 , n =20, a = 16. Thus, Sum = 10 {32+ 19*2} = 10 {70} = 700 seats in total. </span>
<span>X+(X+1)=31
</span>x is the first number and the second number should be x+1, since they are consecutive
Answer: 0.14
Step-by-step explanation: took the review and got it right
where is the rest of the information?
