Marilyn runs at a speed of 9/10 of actual speed and takes 15 minutes more from the time it takes at a normal speed. Calculate the normal time it takes in covering a certain distance?

Marilyn runs at a speed of 9/10 of actual speed and takes 15 minutes m

1.	Marilyn runs at a speed of 9/10 of actual speed and takes 15 minutes more from the time it takes at a normal speed. Calculate the normal time it takes in covering a certain distance?
A.	115 mins
B.	145 mins
C.	135 mins
D.	85 mins
Answer» D. 85 mins

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Marilyn runs at a speed of 9/10 of actual speed and takes 15 minutes more from the time it takes at a normal speed. Calculate the normal time it takes in covering a certain distance?

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