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Sub 505 (Easy)|   Arithmetic|            
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rnz
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The formula F = 9/5*C + 32 gives the relationship between the Updated on: 30 May 2025, 08:43
Originally posted by rnz on 13 Jan 2018, 16:03.
Last edited by Bunuel on 30 May 2025, 08:43, edited 3 times in total.
Renamed the topic, edited the question and added the OA.
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The formula F = 9/5*C + 32 gives the relationship between the temperature in degrees Fahrenheit, F, and the temperature given in degrees Celsius, C. If the temperature is 85 degrees Fahrenheit, what is the temperature, to the nearest degree, in degree Celsius?

A. 18C
B. 23C
C. 29C
D. 47C
E. 51C
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C
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The formula F = 9/5*C + 32 gives the relationship between the 13 Jan 2018, 16:08
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rnz
The formula F=9/5C + 32 gives the relationship between the temperature in degrees Fahrenheit, F, and the temperature given in degrees Celsius,C. If the temperature is 85 degrees Fahrenheit, what is the temperature, to the nearest degree, in degree Celsius?

A. 18C
B. 23C
C. 29C
D. 47C
E. 51C
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\(F=\frac{9}{5}C + 32\)

If F = 85, then \(85=\frac{9}{5}C + 32\);

\(53=\frac{9}{5}C\);

\(C=53*\frac{5}{9} \approx 54*\frac{5}{9}=30\).

Answer: C.
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The formula F = 9/5*C + 32 gives the relationship between the 13 Jan 2018, 16:10
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rnz
The formula F=9/5*C + 32 gives the relationship between the temperature in degrees Fahrenheit, F, and the temperature given in degrees Celsius, C. If the temperature is 85 degrees Fahrenheit, what is the temperature, to the nearest degree, in degree Celsius?

A. 18C
B. 23C
C. 29C
D. 47C
E. 51C
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The formula F = 9/5*C + 32 gives the relationship between the 14 Jan 2018, 09:22
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rnz
The formula F=9/5*C + 32 gives the relationship between the temperature in degrees Fahrenheit, F, and the temperature given in degrees Celsius, C. If the temperature is 85 degrees Fahrenheit, what is the temperature, to the nearest degree, in degree Celsius?

A. 18C
B. 23C
C. 29C
D. 47C
E. 51C
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Alternative approach, work around by plugging in the options as this question talks about approximate values

Use options (C) the middle value ( As the options are in ascending order )

\(F=\frac{9}{5}*C + 32\)

Or, \(30*\frac{9}{5} + 32 = 86\)

Thus, answer must be (C)
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The formula F = 9/5*C + 32 gives the relationship between the 05 Oct 2020, 22:31
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Here, since the values are far apart, approximation can be helpfu

\(F = \frac{9}{5} * C + 32 = 1.8C + 32\)

Now, if we take 1.8C as 2C, this becomes easy. Substituting for the values, we see which is closest to 85 (we must remember that the actual value will be a little lesser than what we have actually got).



Option A: C = 18. Then F = ( 2 * 18) + 32 = 36 + 32 = 68


Option B: C = 23. Then F = ( 2 * 23) + 32 = 46 + 32 = 78


Option C: C = 29. Then F = ( 2 * 29) + 32 = 58 + 32 = 90 => This is closest to 85


We can check the other options, but it becomes unnecessary after this point.



Option C

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The formula F = 9/5*C + 32 gives the relationship between the 06 Oct 2020, 02:10
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F = \(\frac{9}{5}\) * C + 32

=> \(\frac{(5)(F - 32) }{ 9}\) = C

=> \(\frac{(5)(85-32) }{ 9}\) = C

=> C = 29

Answer C
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The formula F = 9/5*C + 32 gives the relationship between the 02 Jan 2024, 07:49
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rnz
The formula F=9/5*C + 32 gives the relationship between the temperature in degrees Fahrenheit, F, and the temperature given in degrees Celsius, C. If the temperature is 85 degrees Fahrenheit, what is the temperature, to the nearest degree, in degree Celsius?

A. 18C
B. 23C
C. 29C
D. 47C
E. 51C
Show more
\(F=\frac{9}{5}*C + 32 \)

Or, \(\frac{5(F - 32)}{9}=C\)

Or, \(\frac{5(85 - 32)}{9}=C\)

Or, \(C = 29.xxxx\), Answer must be (C)
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The formula F = 9/5*C + 32 gives the relationship between the 22 Mar 2026, 02:20
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