Question

At which temperature F° and C° becomes equal- a.)25 b.) 30 c.) 35 d. )40​

Answer 1

ANSWER

Option (d)✓

F° and C° becomes equal to- 40°

As the same scales.

°C= (°C×9/5)+32

°C-(°C×9/5)=32

-4/5×°C =32

°C= -32× 5/4

°C= -40

2nd case

°F= (°F× 9/5)+32

°F= (°F×9/5)=32

-4/5×°F= 32

°F= -32× 5/4.

°F= -40

hope it helps ☺️

Answer 2

Answer:

Your Options seem quite wrong but in the given options option D is the most appropriate answer.

Explanation:

Given that

Temperature in °F = Temperature in °C

We know that

$\boxed{\degree \: F = \frac{9}{5} \degree \: C + 32}$

According to Question

We can solve it by two methods

• We can put value °F at place °C and also °F.
• Also we can put value °C and at place of °F also °C.

But we will solve by putting°F but answer will remain same with both methods.

$= > \degree \: F = \frac{9}{5} \degree F + 32 \\ = > \degree \: F - \frac{9\degree \: F}{5} = 32 \\ = > \frac{5\degree \: F - 9\degree \: F}{5} = 32 \\ > \frac{ - 4\degree \: F}{5} = 32 \\ = > - 4\degree \: F = 160 \\ = > \degree \: F = - \frac{160}{4} \\ = > \huge\boxed{\degree \: F = - 40 \degree}$

Therefore

Temperature will be -40° at which value of °F and °C will be same.