Time t (min ) | Frequency |
\[55\le t<60\] | 4 |
\[60\le t<70\] | 2 |
\[70\le t<80\] | 5 |
\[80\le t<90\] | 3 |
\[90\le t<100\] | 10 |
\[100\le t<110\] | 8 |
\[110\le t<120\] | 10 |
\[120\le t<130\] | 13 |
\[130\le t<140\] | 5 |
A) 43
B) 46
C) 45
D) 30
Correct Answer: D
Solution :
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