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3. Joyce had a 10.00am appointment 60Km from her house. She averaged 80Km/h for the trip
but arrived 20 minutes late for the appointment. At what time did she leave her home that
morning?
A) 9.40
C) 9.15
B) 9.35
D) 9.20
E) None of these

Sagot :

Reinhard10158idn

Answer:

B) 9:35

Step-by-step explanation:

the travel time we get by dividing the distance by the speed

distance / distance/time = time

so,

60 / 80 = 6/8 = 3/4 = 0.75 hours or 45 minutes.

since she arrived 20 minutes late, that means at 10:20 am, she left home 45 - 20 = 25 minutes before 10:00am.

and that is 9:35 am.

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