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Q.

Abha goes to school at 6:45 am and returns home at 2:15 pm. How long will she stay in school if she spends 40 minutes  going back and forth ?


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a

Question Image

b

Question ImageQuestion Image

c

Question Image

d

None of these 

answer is A.

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Detailed Solution

Concept- Now get the start and end times. To find the  period between them,  first change both time units  to the same unit. Then you can see how long she will be out. Calculate the time spent at school by subtracting 40 minutes of walking time and coming time from this time.
The time interval between Question Imageand Question ImageTime spent in coming and going Question ImageTherefore, the time spent at school Question ImageHence, option 1 is correct.
 
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