Twice the arithmetic mean of the two numbers (x-1) , (1-2x) equals ........

Question

Twice the arithmetic mean of the two numbers (x-1) , (1-2x) equals ........

#I need the answer with steps#

Answer 1

This is a trick question. The mean is the average, which you find by adding the amounts and dividing by the number of amounts. Since there are two amounts and you're also multiplying by two, the division and multiplication cancel each other out. So you're left with the two amounts you started with. Combine them and get your answer.

Answer 2

Start by setting each equation given equal to 0 and solve,

x-1=0

x=1

1-2x=0

-2x=-1

x=1/2

Next, find the arithmetic mean (average) by adding up all the numbers you have then divide by how many numbers are given (2).

1+1/2=1.5/2=.75

Now, be aware that they're asking for twice the arithmetic mean, so that means to multiply your answer by 2

.75 x 2= 1.5