Rachel finished a meal at a diner and received a bill for $10.99. She charged the bill along with a 15 percent gratuity to her credit card. What is the total amount she charged to her credit card? Round to the nearest cent if necessary
Mathematics · Middle School · Tue Nov 03 2020
Answered on
Given:
Rachel finished a meal at a diner and received a bill for $10.99. She charged the bill along with a 15 percent gratuity to her credit card.
Determine the total amount she charged.
Solution:
In order to determine the total amount charged, we simply take 15% of 10.99 then add it back to 10.99. To take 15% of 10.99, we multiply 10.99 by the decimal value of 15%. In converting a percentage into decimal, divide the percentage by 100, hence in converting a decimal to percentage, multiply the percentage by 100.
= 15/100
= 0.15
= (0.15)($10.99)
= $1.65
= $1.65 + $10.99
= $12.64
Final answer:
= $12.64