Question

Damien bought a box of 28 cookies. At the end of the day, 3/5 of the cookies were uneaten. To determine how many cookies were eaten, 28 can be multiplied by which decimal value?

Answer 1

Answer:

To determine how many cookies were eaten, 28 can be multiplied by which decimal value of 0.4

Explanation:

Total number of cookies = 28

Fraction of Cookies uneaten at the end of the day = $\frac{3}{5}$

Hence number  of cookies uneaten by the end of the day =$\frac{3}{5} \times28 = 16.8 = 17$

Suppose  $\frac{3}{5}$ cookies are uneaten hence the total fraction of the eaten cookies will be  

=$5 - \frac{3}{5} =\frac{2}{5}$

To obtain in decimal value of  $\frac{2}{5}$

$= \frac{2}{5} = 0.4$

Hence 28 should be multiplied with 0.4 to determine the number of cookies which are eaten