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The daily average rainfall on 5 days of ...

The daily average rainfall on 5 days of the week is 30 mm.If the rainfall on 6th and 7th day are 42 mm and 25 mm respectively, then what is the average daily rainfall for the 7 days ?
सप्ताह के 5 दिनों की दैनिक औसत बारिश 30 मिमी है | यदि छठे और सातवें दिन क्रमशः 42 मिमी तथा 25 मिमी बारिश हुई, तो 7 दिनों के लिए औसत दैनिक बारिश ज्ञात करें |

A

31

B

29.5

C

33

D

28.5

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