5513%
60%
65%
6623%
Correct answer is D
Percentage of students with marks ranging from 35 to 50 = f35+f40+f50∑f
= 35+40+4520+35+40+45+25+15 x 100%
= 120180 x 100%
= 6623%
Approximate 0.0033780 to 3 significant figures ...
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