How many students watched TV for less than 4 hours?
A
34
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B
32
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C
24
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D
30
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Solution
The correct option is A34 From the given diagram, we have
4 students watch television for 1−2 hours 8 students watch television for 2−3 hours 22 students watch television for 3−4 hours Thus, in total 4+8+22=34 students watch television for less than 4 hours