a chemistry teacher divided 31.5 ounces of vinegar equally among all the students in a class. if each…

a chemistry teacher divided 31.5 ounces of vinegar equally among all the students in a class. if each student got exactly 1.5 ounces of vinegar, how many students are in the class?\na 16\nb 30\nc 21\nd 33

a chemistry teacher divided 31.5 ounces of vinegar equally among all the students in a class. if each student got exactly 1.5 ounces of vinegar, how many students are in the class?\na 16\nb 30\nc 21\nd 33

Answer

Explanation:

Step1: Identify the division relationship

We know that the total amount of vinegar divided by the amount per - student gives the number of students. Let the number of students be $n$, the total amount of vinegar $T = 31.5$ ounces and the amount per student $a=1.5$ ounces. So, $n=\frac{T}{a}$.

Step2: Perform the division

$n=\frac{31.5}{1.5}=\frac{315}{15}$ (multiply both numerator and denominator by 10 to get rid of the decimals). $\frac{315}{15}=21$.

Answer:

C. 21