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)**.