Question

if the sum of three consecutive numbers is 60,then the smallest of them is ....​

Answer 1

Answer:

19

Step-by-step explanation:

let the first number be x

so according to the question,

$(x) + (x + 1) + (x + 2) = 60 \\ 3x + 3 = 60 \\ x + 1 = 20 \\ x = 19$

So the smallest number is 19

Answer 2

theThe other two numbers must have a mean of 20 also.

The numbers are consecutive integers.

20-1=19 and 20+1=21 (19+21=40, 40/2=20)

The numbers are 19,20, and 21

19+20+21=60

Another way to look at this is...

If three numbers add up to 60, their mean is 60/3=20.

This is the same as having 20,20, and 20, but, you have three consecutive integers.

Take 1 from the first 20 (19) and add it to the third 20 (21); 19,20,and 21