After fillings the car's fuel tank, a driver drove from P to Q and then to R. He used (2/5)th portion of the fuel driving from P to Q. If she used another 7 liters to drive from Q to R and still had (1/4)th of the tank left, how many liters does the tank hold?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
2 (20)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Solution:
Let full capacity x liters
Fuel used from Q to R = x - (2x/5 + 1x/4)
= (20x - 8x - 5x)/20
= 7x/20
Now,
7x/20 of capacity = 7 gallons
x of capacity = 7 × 20/7 gallons = 20 gallons
