Step-by-step explanation:
Distance covered = speed × time.
Sasha runs at a constant speed of 3.8 meters per second for 1/2 hour.
This means distance covered while running would be
3.8 × 1/2 = 1.9 meters
Then she walks at a constant rate of 1.5 meters per second for 1/2 hour. This means distance covered while walking would be
1.6 × 1/2 = 0.8 meters
Total distance that Sasha covered while running and walking in 60 minutes would be
1.9 + 0.8 = 2.7 meters
