You can calculate the 10% of the usual amount and then add it to the usual amount to get this week's salary and then can subtract the new amount's 10% to get the expense.
Oliver is left with $514.8
How to get a percentage of some amount?
You just multiply that amount by the value of percent and divide by 100. Thus, if you want to calculate 20% of 200, then it is calculated by:
How to calculate the amount Oliver is left with?
His usual salary = $520 per week
He earned this week = Usual salary + 10% of usual salary
10% of the usual salary = $520 × (10/100)=$52
Thus, earning this week = $520 + $52 = $572
Amount spent = 10% of this week =
Thus, the left amount is calculated by:
Left amount = Salary this week- the amount spent
Left amount = $572 - $57.2 = $514.8
Thus, Oliver is left with $514.8
Learn more about percentages here:
brainly.com/question/12722149
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