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Question 127
Study the bar graph and answer the question.
The ratio of the number of neon lamps having a life of 900 hours or more to the number of lamps having life less than 700 hours is:
Solution
Number of neon lamps having a life of 900 hours or more = 70 + 55 + 35 = 160
Number of lamps having life less than 700 hours = 45 + 60 + 75 = 180
=> Required ratio = $$\frac{160}{180}=8:9$$
=> Ans - (B)
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