The average temperature of Monday, Tuesday, Wednesday and Thursday was 38∘ and that of Tuesday, Wednesday, Thursday and Friday was 40∘. If the temperature on Monday was 34∘, the temperature of Friday was :	Answers.
A) 42∘  B) 39∘  C) 38∘  D) 30∘  E) None of these
Explanation:   M+T+W+Th=(4×38)=152   Monday temperature is 34. So T+W+Th=(152-34)= 
<gadget id="calculator">(152-34)</gadget>
<output>118</output>
118   T+W+Th+F=(4×40)=160   F = (160-118)= 
<gadget id="calculator">(160-118)</gadget>
<output>42</output>
42∘   Correct Option: 42∘
<result>A</result>
The average temperature of Monday, Tuesday, Wednesday and Thursday was 38∘ and that of Tuesday, Wednesday, Thursday and Friday was 40∘. If the temperature on Monday was 34∘, the temperature of Friday was :