The given table shows the total number of students studying course and in eight institutes.

course	institutes
	A	B	C	D	E	F	G	H
P	520	410	550	450	570	210	750	450
Q	410	540	610	580	380	550	570	310
R	430	210	390	530	730	510	530	480
S	350	280	570	320	410	480	610	460
T	370	480	380	250	180	370	590	660

The number of students studying course Q in institute B is what percent of the total number of students in institute C?

Correct option is C

​$$\text{Students taking course Q in institute B} = 540 \\[10pt]\text{Total students in institute C: } \\550 + 610 + 390 + 570 + 380 = 2500 \\[10pt]\text{Percentage} = \left( \frac{\text{Number of students in Q at B}}{\text{Total students in C}} \right) \times 100 \\[10pt]\text{Percentage} = \left( \frac{540}{2500} \right) \times 100 \\[5pt]= 0.216 \times 100 \\[5pt]= 21.6 \ (\text{approx.})$$​​