7th Grade Percent Word Problems

Front

What is the formula to calculate the total amount in a bank account after earning interest?

Back

Total Amount = Principal + (Principal × Rate × Time) where Rate is in decimal form.

Front

If a store marks up an item by 90%, what is the equation in y=kx form where y is the new price and x is the original price?

Back

y = 1.9x

Front

How do you calculate the commission earned from sales?

Back

Commission = Sales × Commission Rate.

Front

What is the range of a measurement that can vary by a certain percentage?

Back

Range = Original Length ± (Original Length × Percentage Variation).

Front

How do you calculate the percent change in price?

Back

Percent Change = ((New Price - Original Price) / Original Price) × 100.

Front

What is the principal amount in a bank account?

Back

The principal amount is the initial sum of money deposited or invested.

Front

What does it mean to mark up a price?

Back

Marking up a price means increasing the original price to cover costs and make a profit.

Front

What is the base salary of a car salesman?

Back

The base salary is the fixed amount paid to the salesman before any commissions.

Front

How do you find the total salary of a salesman who earns a commission?

Back

Total Salary = Base Salary + Commission.

Front

What is a 2% variation in length for a 6-inch model piece?

Back

2% of 6 inches = 0.12 inches, so the range is 5.88 to 6.12 inches.