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Q71. The average of 10 results is 40 and the average of other 40 results is 10. What is the average of all the results together?O (A) 16O (B) 25O (C) 50O (D) 8 |
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Answer» Answer: Step-by-step EXPLANATION: SUM= x x/10= 40 x=40x10= 400 sum=x x/40=10 x=10x40=400 sum = 400 + 400= 800 number of OBSERVATION = 40+10= 50 800/5= 160
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