Question

12. Mrs. Sands' class had an ice-cream party. Of all the students, 2/5 chose 5 points vanilla ice cream, 3/10 chose chocolate ice cream, and the rest chose strawberry ice cream. What fraction of the class chose strawberry ice cream? * 5/10 O 3/10 3/5 7/10

Answer 1

3/10 (option B)

Explanation:

fraction that chose vanilla ice cream = 2/5

fraction that chose chocolate ice cream = 3/10

let the fraction that chose strawberry ice cream = y

Total fraction = 1

fraction that chose vanilla ice cream + fraction that chose chocolate ice cream + fraction that chose strawberry ice cream = 1

2/5 + 3/10 + y = 1

$\begin{gathered} \frac{2}{5}+\frac{3}{10}+y=1 \\ \frac{2(2)+3(1)}{10}+y\text{ = 1} \\ \frac{4+3}{10}+y\text{ = 1} \end{gathered}$$\begin{gathered} \frac{7}{10}+y\text{ = 1} \\ y\text{ = 1-}\frac{7}{10} \\ y\text{ = }\frac{10(1)-7}{10} \\ y\text{ =}\frac{10-7}{10} \\ y\text{ = 3/10} \end{gathered}$

Fraction of the class chose strawberry ice cream is 3/10 (option B)