Doug and his friends had dinner at the Burger Barn. The meal cost $80.00. They left the waitress a tip of 10%. How much did the friends pay for dinner altogether?
80.00 * 1.10 = 88.00
Surely you know how to take 10% of something !
take 10% of 80, add it to 80, or
in one step: What is 1.1*80 ?
To calculate the total amount paid by Doug and his friends for dinner, you need to add the cost of the meal and the tip.
First, let's calculate the amount of the tip. To find 10% of the meal cost, you can multiply the meal cost by 0.10 (since 10% is equivalent to 0.10).
Tip = Meal Cost * 0.10
Tip = $80.00 * 0.10
Tip = $8.00
So, the tip left for the waitress is $8.00.
To find the total amount paid by Doug and his friends, you need to add the meal cost and the tip.
Total Amount Paid = Meal Cost + Tip
Total Amount Paid = $80.00 + $8.00
Total Amount Paid = $88.00
Therefore, Doug and his friends paid $88.00 for dinner altogether.