Question

Oliver saves 10% of his weekly earnings for living expenses. He usually makes $520 each week. This

week he made 10% more. Oliver incorrectly claims that he has $520 left for spending money this
week. Calculate the amount of spending money Oliver has left for this week. What error did Oliver
likely make?
Oliver has $
left for spending money this week.

Answer 1

To calculate the amount of spending money Oliver has left this week, subtract the amount he saves for living expenses from his total earnings. Oliver made 10% more this week, so he has $514.80 left for spending money.

Step-by-step explanation:

To calculate the amount of spending money Oliver has left this week, we need to determine his total earnings and subtract the amount he saves for living expenses. This week, Oliver made 10% more than his usual weekly earnings of $520, which is $520 + (10% of $520) = $520 + $52 = $572.

Now, we need to subtract the amount he saves for living expenses. Oliver saves 10% of his weekly earnings, which is 10% of $572 = $57.20.

Therefore, the amount of spending money Oliver has left this week is $572 - $57.20 = $514.80.

The error Oliver likely made is claiming that he has $520 left for spending money this week, which is incorrect because he must subtract the amount he saves for living expenses.