A man 13

A man traveled 7/10 th of his journey by train, half of the remaining by bus, and the remaining 30km by car. Calculate the length of the whole journey.

Correct answer:

x =  200 km

Step-by-step explanation:

a=107=0.7 b=(1a)/2=(1107)/2=203=0.15  a x+b x+30=x 0.7 x+0.15 x+30=x  0.15x=30  x=0.1530=200  x=200=200 km



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