Question

Parth covered 2/5 of his january by bike, 1/7 by bus and rest by train . What fraction of his january was covered by train?​

Answer 1

Answer:

Step-by-step explanation:

Yes, 10K is 6.2 miles; a considerable distance.

 

Let x = total journey distance

 

 by train  +   by taxi    +   by bus   +   by foot     =   total journey

   (2/5)x  +   (1/3)x    +    (1/6)x   +   10K         =   x

 

To get rid of all fractions, multiply by the LCM of the denominators (this is just like finding the Least Common Denominator).    LCM = 30

 

     12x     +   10x      +      5x       +    300K        =   30x

       27x + 300K =  30x       [group like terms]

        300K =  3x                [subtract 27x from both sides]

         100K = x                 [divide both sides by 3]

Answer 2

Answer:

16/35

Step-by-step explanation:

let total fraction be '1'

let third number be 'a'

1=2/5+1/7+a

1-2/5=1/7+a

LCM of 1 and 5=5

5/5-2/5=1/7+a

3/5-1/7=a

LCM of 5and 7=35

21/35-5/35=a

16/35=a