In a school,total school hours are divided as follows:20min for morning prayer,20mins forbrecess and 8bperiods each of 40min duration.If the players time and recess time are increased to 40mins each,how lomg would each period be,assuming the number of school hours to be the same?
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Total hours before increment: 20m +20m+(40×8m)
=360mins.
convert into hrs: 360÷60=6hrs.
After increment, prayer and recess time will 40+20, 40+20 resp.=60 min and 60 mins.
School time will the same.
Let length of a period is 'm' mins.
♂60 +60+(8×m)=360 mins.
120+8m=360
8m=360-120
8m=240
m=240÷8=30mins.
May it help...
=360mins.
convert into hrs: 360÷60=6hrs.
After increment, prayer and recess time will 40+20, 40+20 resp.=60 min and 60 mins.
School time will the same.
Let length of a period is 'm' mins.
♂60 +60+(8×m)=360 mins.
120+8m=360
8m=360-120
8m=240
m=240÷8=30mins.
May it help...
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