An employee may claim Tk. 7 for each kilometer when he travels by taxi and Tk. 6 for each kilometer when he drives his own car. If in one week he claimed Tk. 900 for travelling 135 km, how many kilometers did he travel by taxi?

A 90 km

B 100 km

C 110km

D 120 km

Solution

Correct Answer: Option A

মনে করি ,
  ট্যাক্সিতে যায় =x কি.মি.

নিজের গাড়িতে যায় =(135-x)
প্রশ্নমতে ,

 7x +6(135-x)=900
বা,7x+810-6x=900
বা,x=900-800
বা, x =90 কি মি

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