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Study the bar graph and answer the quest...

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

A

`A. 25:21`

B

B. `8:9`

C

C.`6:7`

D

D. `7:8`

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The correct Answer is:
B
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