Question

Denise records the number of cream rolls she bakes everyday as shown in the table below. She forgot to make an entry on Wednesday.

If mean number of cream rolls she bakes is 52, how many cream rolls did she bake on Wednesday?

• A. 120
• B. 96
• C. 47
• D. 52

Answer 1

The correct option is B 96

Mean = $\frac{Sumofalldatapoints}{Numberofdatapoints}$

We know that mean = 52.

Substituting the value of mean, we get :
52 = $\frac{32+45+x+38+49}{5}$

52 × 5 = $\frac{164+x}{5}$ × 5
260 = 164 + x
260 − 164 = 164 + x − 164
96 = x

Thus, Denise bakes 96 cream rolls on Wednesday.