Question

Sheetal travelled 1/10 of the journey by bus and 1/4 by a car,and the remaining 78km

,she travelled by railway.what was the total distance

Answer 1

x= total distance

x/10 + x/4 + 78 = x

put everything under common denominator 20

(2x+5x+1560)/20 = 20x/20

reduce

7x+1560=20x

7x-20x=-1560

solve

-13x=-1560

13x=1560

x= 1560/13 = 120

the total distance of his journey = 120km

Explanation: