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Question
Preston works at a grocery store and earns between $64 and $81 each day he works. Which is a reasonable estimation of how much Preston will earn if he works 5 days?
Responses
A $220$220
B $940$940
C $370$370
D $480
To estimate how much Preston will earn if he works 5 days, we can take the average of the minimum and maximum amount he earns each day and multiply it by 5.
The average of $64 and $81 is $\frac{64+81}{2}=\frac{145}{2}=72.5$.
Multiplying $72.5$ by 5 gives us $72.5 \times 5 = 362.5$.
Therefore, a reasonable estimation of how much Preston will earn if he works 5 days is $362.5.$
The closest option to this estimation is $\boxed{\text{(C)}$ $370}$.
To estimate how much Preston will earn if he works 5 days, we can take the average of the minimum and maximum earnings per day and multiply it by 5.
The average of $64 and $81 is (64 + 81)/2 = $72.50.
Therefore, a reasonable estimation of how much Preston will earn if he works 5 days is:
$72.50 x 5 = $362.50
So, the correct answer is C. $370.
To estimate how much Preston will earn if he works 5 days, we need to find the average amount he earns each day and then multiply it by 5.
The given range of earnings for Preston is between $64 and $81 each day. To find the average, we add the minimum and maximum earnings and divide by 2.
Minimum earnings: $64
Maximum earnings: $81
Average earnings = (Minimum earnings + Maximum earnings) / 2
= ($64 + $81) / 2
= $145 / 2
= $72.50
So, Preston earns an average of $72.50 each day.
To find the estimated earnings if he works 5 days, we multiply the average earnings by 5.
Estimated earnings = Average earnings * Number of days
= $72.50 * 5
= $362.50
Since the given options are in whole numbers, we round the estimated earnings to the nearest whole number.
The reasonable estimation of how much Preston will earn if he works 5 days is approximately $370.
Therefore, the answer is C) $370.