Question

The table shows the grapes eaten by Wolf. If the average grapes eaten by Wolf per day is 1 lb, grapes eaten on Day 3 is .

• A. 1 lb
• B. 2 lbs
• C. $\frac{3}{2}$ lbs

Answer 1

The correct option is A 1 lb

Grapes eaten on Day 1 is 3/4 lb and on Day 2 is 5/4 lb.

Let x be the amount of grapes eaten on Day 3.

Average grapes eaten by Wolf = 1 lb

Since average is sum of the values divided by the number of values,
($\frac{3}{4}$ + x + $\frac{5}{4}$) $÷$ 3 = 1
$\Rightarrow$ (x + $\frac{8}{4}$) $\times$ $\frac{1}{3}$ = 1
$\Rightarrow$ (x + 2) = 3
$\Rightarrow$ x = 1

Hence, Wolf ate 1 lb of grapes on Day 3.