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Arun was out at a restaurant for dinner when the bill came. He wanted to leave a tip of
10%. What number should he multiply the cost of the meal by to find the total plus tip in one step?
Answer:

Arun was out at a restaurant for dinner when the bill came. He wanted to leave a tip of $10 \%$ . What number should he multiply the cost of the meal by to find the total plus tip in one step? $\newline$ Answer:

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Find the percent: tax, discount, and more

Full solution

Q. Arun was out at a restaurant for dinner when the bill came. He wanted to leave a tip of

10 \%

. What number should he multiply the cost of the meal by to find the total plus tip in one step?

\newline

Answer:

Understand the problem: Understand the problem. $\newline$ Arun wants to leave a $10\%$ tip on the cost of his meal. To find the total cost including the tip, he needs to add the tip to the original cost of the meal. The tip is $10\%$ of the meal's cost, so we need to express the total cost as a percentage of the original cost.
Express as percentage: Express the total cost as a percentage. $\newline$ The original cost of the meal is $100\%$ of itself. A $10\%$ tip means that the tip is $10\%$ of the original cost. To find the total cost including the tip, we add the original cost ( $100\%$ ) and the tip ( $10\%$ ) together. $\newline$ $100\% + 10\% = 110\%$
Convert to decimal: Convert the percentage to a decimal. $\newline$ To use this percentage to find the total cost in one step, we convert the percentage to a decimal. To do this, we divide the percentage by $100$ . $\newline$ $110\% \div 100 = 1.10$
Find total cost: Use the decimal to find the total cost. $\newline$ Arun should multiply the cost of the meal by $1.10$ to find the total cost including the tip.

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