Question

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

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

Answer 1

The correct option is A 1 kg

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

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

Average grapes eaten by Wolf = 1 kg

Since average is the sum of 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 kg grapes on Day 3.