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The temperature at 12 noon was 10 above 0 if it decreases at the rate of 3 per hour until midnight at what time would the temperature be 8 below zeroclass 7​

Answer» <html><body><p> </p><h2><u>Answer :-</u></h2><p> </p><p>The temperature at <a href="https://interviewquestions.tuteehub.com/tag/12-269062" style="font-weight:bold;" target="_blank" title="Click to know more about 12">12</a> noon = 10° C above zero</p><p></p><p>The temperature is decreasing at 2° C per hour</p><p></p><p>8° C below zero = – 8° C</p><p></p><p>So, total fall in temperature from 10° C to 0° C and from 0° C to – 8° C = 18° C</p><p></p><p>Since the temperature falls 2° C in <a href="https://interviewquestions.tuteehub.com/tag/every-976721" style="font-weight:bold;" target="_blank" title="Click to know more about EVERY">EVERY</a> one hour.</p><p></p><p>Therefore, to decrease 18° C, time taken = 18/2 = <a href="https://interviewquestions.tuteehub.com/tag/9-340408" style="font-weight:bold;" target="_blank" title="Click to know more about 9">9</a> hours</p><p></p><p>Present time is 12 noon so, the time when the temperature is – 8° C= 12 noon + 9 hours</p><p></p><p>So, The time at which the temperature will be – 8° C = 9 PM</p><p></p><p>At 9 PM, the temperature is – 8° C, the temperature at 12 midnight will be =</p><p></p><p>(- 8° C) + (- 2° C × 3 hours)</p><p></p><p>= (- 8° C) + (- 6° C)</p><p></p><p>= – 14° C</p><p></p><p><strong><u>So, at 12 midnight the temperature will be – 14° C.</u></strong></p></body></html>


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