Question

An airplane travels 3100km at a speed of 790km/h, and then encounters a tailwind that boosts its speed to 990km/h for the next 2800 km. what was the total time for the trip? what was the average speed of the plane for this trip?

Answer 1

Answer:

6.75233 h

Explanation:

✓airplane travels 3100km at a speed of 790km/h,

Speed= distance/ time

Time= speed/distance

Distance=3100 km

Speed=790km/h

Time= 3100 /790

= 3.924 h

✓and then encounters a tailwind that boosts its speed to 990km/h for the next 2800 km

Time= 2800 k990km/h

= 2800/990

= 2.828 h

We can calculate total times as (3.924 + 2.828)

= 6.75233 h