Can you help me with my son's homework question:

Maria earned $110, which is $86 more than twice the amount Joan earned. How much did Joan earn?
a. $12
b. $18
c. $24
d. $30

I would like to know the 5th grade equation that represents the answer. I guess I'm not smarter than a 5th grader on this one. Thanks for your help.

well, TwiceJoaneared + 86 is 110

so twiceJoanearned must be 24 so joan earned....

Seems Like Joan earned $12.

Thanks!

110-86=24

as of july 2004, the population of the united states was 293,027,571.If more than half of these people live within 80 kilometers of an ocean, about how many people live within that distance?

Of course, I can help you with that! To solve this problem, we first need to set up an equation based on the given information. Let's use the variable x to represent the amount Joan earned.

According to the problem, Maria earned $110, which is $86 more than twice the amount Joan earned. So, we can express this information as:

Maria's earnings = 2 * Joan's earnings + $86

Now let's substitute x into the equation to represent Joan's earnings:

Maria's earnings = 2x + $86

Since Maria earned $110, we can replace Maria's earnings with $110:

$110 = 2x + $86

Now, to find out how much Joan earned (x), we need to isolate x on one side of the equation. We can do this by subtracting $86 from both sides:

$110 - $86 = 2x + $86 - $86
$24 = 2x

Now, to find the value of x, we need to divide both sides of the equation by 2:

$24 / 2 = 2x / 2
$12 = x

So, Joan earned $12. Therefore, the correct answer is option a. $12.

The equation that represents the answer is:

2x + $86 = $110

By solving this equation, we determine that x (Joan's earnings) is equal to $12.