answer the questions give in the abive picture
Answers
Step-by-step explanation:
Number of students in each grade
\begin{gathered} \\ \end{gathered}
Assume (as per given informations):-
\begin{gathered} \\ \end{gathered}
Total number of students in grade 3 = 4x
Total number of students in grade 4 = 3x
Total number of students in grade 5 = 6x
\begin{gathered} \\ \end{gathered}
According to question,
\begin{gathered} \\ \end{gathered}
\sf \large{Ratio \: \: of \: \: three \: \: grades = 520}Ratioofthreegrades=520
\begin{gathered} \\ \end{gathered}
\: \: \: \: \: \: \sf \implies \large4x + 3x + 6x = 520⟹4x+3x+6x=520
\begin{gathered} \\ \end{gathered}
\: \: \: \: \: \: \sf \implies13x = 520⟹13x=520
\begin{gathered} \\ \end{gathered}
\: \: \: \: \: \: \sf \implies x = \frac{520}{13} = 40⟹x=
13
520
=40