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 then 700 hours is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 8 : 9
| Understanding | Application |
| Tricks |
No of all lamp which has 900 and more = 70 + 55 + 35 = 160 |
| Now |
No of all lamp which has less than 700 = 75 + 60 + 45 = 180 |
| Hence |
Ratio = 160/180 16/18 8 : 9 |