After fillings the car's fuel tank, a driver drove from P to Q and then to R. He used 2/5th portion of the fuel driving from P to Q. If she used another 7 litres to drive from Q to R and still had 1/4th of the tank left, how many litres does the tank hold?
Solution
Correct Answer: Option C
মনে করি, ট্যাংকিতে fuel ধরে x লিটার
প্রশ্নমতে, (2x/5)+7+(x/4) = x
⇒(2x/5)+(x/4)-x = -7
⇒(8x+5x-20x)/20 = -7
⇒-7x = -7 × 20
⇒ x = 20
∴ ট্যাংকটিতে fuel ধরে 20 লিটার
প্রশ্নমতে, (2x/5)+7+(x/4) = x
⇒(2x/5)+(x/4)-x = -7
⇒(8x+5x-20x)/20 = -7
⇒-7x = -7 × 20
⇒ x = 20
∴ ট্যাংকটিতে fuel ধরে 20 লিটার
Practice More Questions on Our App!
Download our app for free and access thousands of MCQ questions with detailed solutions