Gwen is travelling to another country.
She flies for 3 hours at an average speed of 625 km/h on one plane.
She then flies for 4 hours 15 minutes at an average speed of 880 km/h on a second plane.
What is the total distance, in km, she travelled by plane?
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Answer: 5615 km
Step-by-step explanation:
In 1st plane, She flies for 3 hours at an average speed of 625 km/h ,
Distance covered = Speed × Time = 625× 3= 1875 km
In 2nd plane, She then flies for 4 hours 15 minutes at an average speed of 880 km/h,
Distance covered in 2nd plane = Speed × Time
[ 4hr+15min= 4+15/60= 4+ 1/4= 17/4 hrs]
= 880 × 17/4= 220×17= 3740 km
Total distance covered by plane = 1875+ 3740= 5615 km
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