Question
A container contains 60 liters of a solution containing
25% alcohol. How many liters of pure alcohol must be added to make the alcohol concentration 40%?Solution
Let x liters of pure alcohol be added to the mixture. Initially, the amount of alcohol in the mixture is 25% of 60 liters, which is 15 liters. After adding x liters of pure alcohol, the total amount of alcohol becomes 15 + x liters, and the total volume of the solution becomes 60 + x liters. The final concentration of alcohol is 40%. We can set up the equation: (15 + x) / (60 + x) = 40/100 = 2/5. Cross-multiply: 5 × (15 + x) = 2 × (60 + x), 75 + 5x = 120 + 2x, 5x - 2x = 120 - 75, 3x = 45, x = 45 / 3 = 15 liters. Correct option: c) 15 liters.
Any rupee note, which has a political slogan is not a legal tender as per.
A shopkeeper allows a discount of 20% on a product and incurs a loss of 15%. If the difference between the discount given and the loss is Rs. 220, find ...
The International Bank for Reconstruction and Development (IBRD) is an international financial institutions that offer loans to-
Which economy is called as Closed Economy?Â
It is the highest rated bond which gives maximum returns at the time of maturity?
MUDRA Bank, is a subsidiary of which of the following bank?Â
RBI asked banks to stop offering teaser loans. What are teaser loans?
ALM stands forÂ
What is Securitization?
Which of the following are not the Priority Sector categories?
Relevant for Exams:
