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Q.

Madhu worked 212 hours on Monday, 314  hours on Tuesday, and 234 hours on Wednesday. What is the mean number of hours she worked on these three days?


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a

265

b

356

c

256

d

376 

answer is C.

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Detailed Solution

No. of hours Madhu worked on Monday is 212 =52
No. of hours Madhu worked on Tuesday is 314 =134
No. of hours Madhu worked on Wednesday is 234 = 114
Therefore, Mean no. of hours Madhu worked on these 3 days
Average = 52 + 134 + 1143  = 104 + 134 + 1143
10 + 13 + 114 × 3 = 3412 =256
So, the average hours Madhu worked in these three days =256
 
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