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Q.

A Fahrenheit thermometer reads 1130F while a faulty Celsius thermometer reads 440C. The difference in temperature between the faulty and actual temperature is 

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a

–10C   

b

+10C

c

+20C

d

-20F

answer is B.

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Detailed Solution

F = 1130F, C = 440C(faulty reading)
we have large frac {C}{5}=frac {F-32}{9}Rightarrow frac {C}{5}=frac {113-32} {9}
C = 450C (correct reading)
large therefore  correction = 45 - 44 = +10C

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