It was 7 cm of rainfall on Sunday. Average rainfall for the rest of the week was 3.5 cm. What is the average rainfall for the entire week?
(A) 5.5 cm
(B) 5 cm
(C) 4.5 cm
(D) 4 cm
(E) None of the above
Let
be rainfalls from Sunday to Saturday.
It is given to us that
cm
It is also given to us that
cm
cm
Average rainfall for the entire week
cm
Hence, the answer is (D).
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