Usha participated in a marathan walk and completes the journey in 10 hours. if she travels half the distance with a speed of 10 km/hr and remaining half distance with a speed of 15 km/hr. then calculate the total distance of the marathan walk.

time taken to complete the journey= 10 hour

time taken in first half= 10km/hr

Step-by-step explanation:

=50km in 5hr

time taken in second half = 15 km / hr

= 75km in 5 hr

therefore Total distance covered =50+75=125km in 10 hr

answer:

the law of definite proportion, sometimes called proust's law or the law of definite composition, or law of constant composition states that a given chemical compound always contains its component elements in fixed ratio and does not depend on its source and method of preparation.