how?
I'm sorry, could you please specify what you need help with?
Oliver raised his grade from an 85 to a 92 for the semester. What was the percent increase of his grade?
To find the percent increase of Oliver's grade, you can use the following formula:
Percent Increase = (New Value - Old Value) / Old Value * 100
In this case, Oliver raised his grade from 85 to 92. Applying the formula:
Percent Increase = (92 - 85) / 85 * 100
Percent Increase = 7 / 85 * 100
Percent Increase ≈ 8.24%
Therefore, Oliver's grade increased by approximately 8.24%.
While racing around the track last week, Marco was able to get to 120 mph. This week Marco tried again and was able to reach 135 mph. What was the percentage increase from last week to this week?
To find the percentage increase from last week to this week, you can use the following formula:
Percentage Increase = (New Value - Old Value) / Old Value * 100
In this case, Marco's speed increased from 120 mph to 135 mph.
Applying the formula:
Percentage Increase = (135 - 120) / 120 * 100
Percentage Increase = 15 / 120 * 100
Percentage Increase ≈ 12.5%
Therefore, Marco's speed increased by approximately 12.5% from last week to this week.
A teacher has an annual income of $51,750. The income tax the teacher has to pay is 7%. What is the amount of income tax in dollar and cents the teacher has to pay?
To calculate the amount of income tax the teacher has to pay, you can multiply their annual income by the tax rate:
Income Tax = Annual Income * Tax Rate
In this case, the annual income is $51,750 and the tax rate is 7%.
Applying the formula:
Income Tax = $51,750 * 0.07
Income Tax = $3,622.50
Therefore, the teacher has to pay $3,622.50 in income tax.