Question

the average of the three numbers is 80.the first number is 10 times more than twice the second number,and the second number is 10 times less than the third number.what are number three?​

Answer 1

Answer:

I can't answer this question because I have not any ideas about this

Step-by-step explanation:

I can't answer this question because I have not any ideas about this

Answer 2

Answer:

The three numbers are 40,15 and 25.

Step-by-step explanation:

Let the three numbers be a,b,c.

As given in the question,

(a+b+c) ÷ 3 = 80 ------> equation 1

According to the question, a= 10+2b -------> equation 2

Also,

b= c - 10

which can also be written as

c= b+10 ------> equation 3

Substituting the values of a and c in equation 1 ,

(10+2b+b+b+10 )÷ 3 = 80

20+4b = 80

4b= 60

b= 15.

Hence, the second number, that is b is 15.

substituting the value of b in equation 2 and equation 3,

we get,

a= 10+2(15)

   =10+30

a= 40.

And,

c= (15)+10

c= 25.

Hence the three numbers are 40,15 ad 25.