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  1. The inside of an oven is set to rise to a temperature of 298 degrees. So far it has risen 76% of this amount.

Which would be the best way to estimate the number of degrees the inside of the oven has risen so far?

AFind 75% of 200.
BFind 75% of 300.
CFind 80% of 200.
DFind 80% of 300.

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  1. A building is being constructed. When completed, it will be 596 meters tall. It currently stands at 77% of this height.

Which is the best estimate for the current height of the building?

A350 meters
B400 meters
C420 meters
D450 meters

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  1. The Rodriguez family dined at a restaurant. Their bill came to $119, but they also have to pay a 9% tax and they plan to leave a tip of 22%.

Which is a reasonable estimate of the total amount they will pay?

A$121
B$132
C$144
D$156

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Verified Answer :

  1. A

    2. D

    3. D

    Those are the answers I got I hope this helps you!!

Answer:

(1) B. Find 75% of 300.

(2) D. 450 meters.

(3) D. $156.

Step-by-step explanation:

(1). We have been given that the inside of an oven is set to rise to a temperature of 298 degrees. So far it has risen 76% of this amount.

We can see that 298 is very close to 300 and 76 is very close to 75, therefore, the best way to find the number of degrees the inside of the oven has risen so far is to find 75% of 300 and option B is the correct choice.

(2). We have been given that a building is being constructed. When completed, it will be 596 meters tall. It currently stands at 77% of this height.

Let us find 77% of 596.

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Therefore, the best estimate for the current height of the building is 450 meters and option D is the correct choice.

(3). We have been given that the Rodriguez family dined at a restaurant. Their bill came to $119, but they also have to pay a 9% tax and they plan to leave a tip of 22%.

Let us find amount paid by The Rodriguez family after tax.

\(\text{The cost of dinner after bill}=119+(\frac{9}{100}\times 119)\)

\(\text{The cost of dinner after bill}=119+(0.09\times 119)\)

\(\text{The cost of dinner after bill}=119+10.71\)

\(\text{The cost of dinner after bill}=129.71\)

Now let us find amount of bill after tip.

\(\text{The cost of dinner after tip}=129.71+(\frac{22}{100}\times 129.71)\)

\(\text{The cost of dinner after tip}=129.71+(0.22\times 129.71)\)

\(\text{The cost of dinner after tip}=129.71+(28.5362)\)

\(\text{The cost of dinner after tip}=158.2462\)

Therefore, the reasonable estimate of the total amount, the Rodriguez will pay, is $156 and option D is the correct choice.

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