Question

a takes more than B to walk 30 km but if double his speed he is a head by b by 3 by 2 hour find their speed of walking

Answer 1

Answer:

Step-by-step explanation:

Let speed of  km/hr.

and  km/hr.

Therefore according to the question we get two equation.

 ……..(1)

……..(2)

Now Let begin mathsize 12px style 1 over straight x equals straight A space and space 1 over straight y equals straight B end style

Then equation (1) and (2) becomes

         

or                ……..        (3)

              …….. (4)  

Adding (3) and (4) we get

                 

Putting this value of A in (3) we get

         

But begin mathsize 12px style straight A equals 1 over straight x space or space straight x equals 10 over 3 end style

and begin mathsize 12px style straight B equals 1 over straight y space or space straight y equals 5 end style

Hence speed of A is begin mathsize 12px style 10 over 3 end style km/hr and B is 5 km/hr.