Question

Against the wind a small plane flew 858 miles in 2 hours and 10 minutes. The return trip took only 1 hour and 50 minutes. What was the speed of the​ wind? What was the speed of the plane in still​ air?

Answer 1

Answer:

36 km/hr & 432 km/hr

Step-by-step explanation:

s- speed of the plane

w- speed of the wind

s+w= 858 km/110 min =7.8  km/min

s-w= 858 km/130 min= 6.6 km/min

From the above equations:

2s=7.8+6.6=14.4 => s=7.2 km/min => w=0.6 km/min

Speed of the plane 7.2 km/min = 432 km/hr

Speed of the wind 0.6 km/min= 36 km/hr