The sum of three consecutive numbers is 543. What is the 2nd number?

181

Step-by-step explanation:

set up equation:

n + (n+1) + (n+2) = 543

3n + 3 = 543

3n = 540

n = 180

180, 181, 182

181

Explanation: First represent your 3 consecutive numbers as follows.

X ⇒ first number

X + 1 ⇒ second number

X + 2 ⇒ third number

Since their sum is 543, our equation reads x + (x + 1) + (x + 2) = 543.

Simplifying on the left side we have 3x + 3 = 543.

Subtracting 3 from both sides, we have 3x = 540.

Now dividing both sides by 3, we find that x = 180.

If x = 180, then x + 1 is 180 + 1 or 181 and x + 2 is 180 + 2 or 182.

This means that your second number would be 181.

answer: there are x+184 pages in olivia's book.

step-by-step explanation:

let the total number of pages in the book which olive has already read be x.

then if olive has 184 pages left to read, then the total number of pages are in olive's book= pages she has read+pages she has left to read

therefore, the total number of pages in olivia's book=

hence, there are x+184 pages in olivia's book.