Question

three friends Thomas,Harry and James went for the marathon and start their run at 6AM and run through planes and the hills on their way and return at 12P.m. if their speeds on the plane is 4km/h up the hill 3km/h and down the hill 6 km/h find the total distance

Answer 1

Answer:

Please mark me as brainliest, as it is very easy once its figured out.

Answer is 13.

Step-by-step explanation:

Let total distance be x.

Total time =6 AM -12PM = 6hrs

Using unitary method---

Time for 4km/hr=(6/x)*4 hrs

Time for 6 km/hr=(6/x)*6 hrs

Time for 3km/hr=(6/x)*3 hrs

Now,

(6/x)*6+(6/x)*4+(6/x)*3 =6 hrs

=> (6/x)*(6+4+3) =6

=> (6/x)*13 =6

=> 6/x =6/13

=> 1/x =6/(13*6)

=> x =(13*6)/6 =13km  ---Ans.

Answer 2

Step-by-step explanation:

13 kilo meter............