We have no factors to go by
There are three unknowns in this problem. First, let's assign variables for these unknowns.
Let
x be the amount received by the first friend
y be the amount received by the second friend
z be the amount received by the third friend
Next, we formulate equations for the relationships
x = 4z
z = 4y
x + y + z = <span>$231,000
Solving simultaneously,
4(4y) + y + 4y = </span><span>$231,000
21y = </span><span>$231,000
y = $11,000
z = 4($11,000) = $44,000
x = 4($44,000) = $176,000</span>
Y=x-4
From this we plug in the answer to find the y value!
For example y=3-4=-1 A.) would be incorrect!
Y=3-4=-1 B.) would be incorrect!
C.) y= -3-4=-7 while it’s SUPPOSE to be 7.
D.) y= -3-4=-7 and y value is -7
Correct answer: D!
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1.68 is a rational number and is also a real number. This is true because rational numbers can be written by ratios, and real numbers also include decimals.
