Arithmetichard · Past Paper
A mixture contains alcohol and water in the ratio 4:3. If 5 liters of water is added, the ratio becomes 4:5. Find the quantity of alcohol in the mixture.
A10 L
B15 L
C12 L
D18 L
✓ Correct Answer: A — 10 L
Alcohol = 4x, Water = 3x. 4x/(3x+5) = 4/5 => 20x = 12x+20 => 8x = 20 => x=2.5. Alcohol = 4 * 2.5 = 10 L.
Share this question
More from Arithmetic
- In an exam, a student must get 40% marks to pass. If he gets 185 marks and fails by 15 marks, find the maximum marks.
- A jacket's price is increased by 20% and then decreased by 20%. What is the net change?
- What is the single discount equivalent to two successive discounts of 20% and 10%?
- Find the value of x such that 12, 18, x are in continued proportion.
- In a class of 50 students, 40% are girls. How many boys are there?