AVERAGE TO TOPPER 7 DAY CHALLENGE

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The daily average temperatures in Chennai for the 7 days of a week were recorded. The average temperatures on Sunday, Monday and Tuesday were 20^(@) C, 38^(@) C & 32^(@) C respectively. The average temperatures on Thursday , Friday and Saturday were 29^(@) C, 22^(@) C and 30^(@) C respectively . If the average of average temperatures on the first three days of the week beginning with Sunday equals that of the last four days, find the temperature on Wednesday

Average of 13 number is 52. Average of first 7 number is 51. Average of last 7 number is 54. Find 7^(th) number.

A shop of mobile phones is closed on Tuesday. The average sale per day for remaining six days of a week is Rs.1564 and the average sale of Wednesday to Sunday is Rs. 1412.4. The sales on Monday is:

The daily average rainfail on 5 days of a week is 30 mm. If the rainafail on 6^(th) and 7^(th) day are 42 mm and 25 mm respectively. Then what is the average daily rainfail for the 7 days ?