The County Inspector greeted Margie with a smile and offered her an apple. He then removed the mechanical teacher from her possession, proceeded to repair it, and informed Margie's mother that the geography sector of the mechanical teacher was set to too high a speed. He adjusted it to an average level suitable for a ten-year-old.
Why was Santosh sent to the local school?
When did she leave home for Delhi, and why?
Length (in hours) | Number of lamps |
|---|---|
300 − 400 | 14 |
400 − 500 | 56 |
500 − 600 | 60 |
600 − 700 | 86 |
700 − 800 | 74 |
800 − 900 | 62 |
900 − 1000 | 48 |
(i) Represent the given information with the help of a histogram.
(ii) How many lamps have a lifetime of more than 700 hours?
Why was Santosh sent to the local school?