IXL - Multi-step problems with percents (Algebra 1 practice)

Tommy took one of his friends out to dinner. The dinner cost $100 and he paid 3% sales tax. If Tommy left an 18% tip on the $100, how much in total did he pay?

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question

To celebrate getting a new job, Marco went out for a dinner that cost $100. If the local sales tax is 6% and Marco left a 15% tip on $100, what was the total cost of his meal?

key idea

Tax formula:

tax

tax percentage

amount

Tip formula:

tip

tip percentage

amount

solution

First find the tax. Write 6% as the decimal 0.06 before using it in the equation.

tax

tax percentage

amount

0.06

100

The tax was

Now find the tip. Write 15% as the decimal 0.15 before using it in the equation.

tip

tip percentage

amount

0.15

100

The tip was

Finally, find the total cost.

total cost

cost + tax

tip

100

121

The total cost was

121

Looking for more? Try these:

Lesson: Percent change

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Teacher tools

Work it out

Not feeling ready yet? These can help:

I.5Percent of a number: tax, discount, and more

H.9Solve percent equations

D.1Add and subtract decimals

Lesson: Percent change

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