ABC26GN5599 · Tabulation

For each subject, we find the overall percentage as under: $$\begin{aligned} (i) \text { Maths } & =\left[\frac{1}{7} \times(90+100+90+80+80+70+65)\right] \% \\ & =\left[\frac{1}{7} \times(575)\right] \%=82.14 \% . \end{aligned}$$ Chemistry $$\begin{aligned} & =\left[\frac{1}{7} \times(50+80+60+65+65+75+35)\right] \% \\ & =\left[\frac{1}{7} \times(430)\right] \%=61.43 \% . \end{aligned}$$ Physics $$\begin{aligned} & =\left[\frac{1}{7} \times(90+80+70+80+85+65+50)\right] \% \\ & =\left[\frac{1}{7} \times(520)\right] \%=74.29 \% . \end{aligned}$$ Geography $$\begin{aligned} & =\left[\frac{1}{7} \times(60+40+70+80+95+85+77)\right] \% \\ & =\left[\frac{1}{7} \times(507)\right] \%=72.43 \% . \end{aligned}$$ History $=\left[\frac{1}{7} \times(70+80+90+60+50+40+80)\right] \%$ $$=\left[\frac{1}{7} \times(470)\right] \%=67.14 \% .$$ Computer Science $$\begin{aligned} & =\left[\frac{1}{7} \times(80+70+70+60+90+60+80)\right] \% \\ & =\left[\frac{1}{7} \times(510)\right] \%=72.86 \% . \end{aligned}$$ Clearly, this percentage is highest for Maths.