Question

Kallie's mom takes her out for lunch. The bill comes to $18.75. Her mom comments that the waiter did a good job and deserves a 15% tip. Kallie notices that her mom leaves a $4 tip. Explain how Kallie can mentally estimate whether her mom's tip is reasonable for a 15% tip.

Answer 1

Answer:

The tip was actually a little over 15% so we could surely say it is pretty sound and reasonable.

Step-by-step explanation:

To Determine:

Explain how Kallie can mentally estimate whether her mom's tip is reasonable for a 15% tip?

Information Fetching and Solution Steps:

As

• Kallie's mom takes her out for lunch
• The bill comes to $18.75
• Her mom comments that the waiter did a good job and deserves a 15% tip
• Kallie notices that her mom leaves a $4 tip

So,

• You can find $\:10\%$ by moving the decimal point one place to the left
• $\:10\%$ of $18.75$ will be $1.875$, then half of that will be $5\%$

So, $15\%$ should be be about $1.88\:+\:0.94\:=\:2.82$

Therefore, the tip was actually a little over 15% so we could surely say it is pretty sound and reasonable.

Keywords:  tip, word problem, decimal

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