# Question #89fd2

##### 2 Answers

Feb 1, 2018

The middle number is :

#### Explanation:

Given that the three numbers are consecutive.

If the middle number is

the first number will be

and the last number will be

Given:

So the three consecutive numbers that sum up to 54 are : 17, 18 , and 19.

And, the middle number is

Feb 1, 2018

#### Explanation:

#"assuming the numbers to be whole then"#

#"the middle number is "x#

#"the number before it is "x-1#

#"the number after it is "x+1#

#rArr"sum "=xcancel(-1)+x+xcancel(+1) =54#

#rArr3x=54#

#"divide both sides by 3"#

#(cancel(3) x)/cancel(3)=54/3#

#rArrx=18larrcolor(red)"middle number"#

#"the 3 numbers are "17,18" and "19#