ExamPrepWay
Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Solve this faster with the right shortcut first
- List the given numbers and units.
- Choose the formula that matches the asked value.
- Simplify carefully and compare with options.
Correct Answer: D
Correct Answer: D
Method / Topic: Mixture and Allegation
The answer follows from the arithmetic relation between the given values.
Short Explanation
Detailed Explanation
Correct Answer: D
Method / Topic: Mixture and Allegation
Acid quantity=40×25%=10 litres. Total volume after adding water=50 litres, so acid percentage=10/50×100=20%.
See full explanation + shortcut trick
Compare the quick idea with the premium step-by-step explanation and faster solving trick for this pattern.
Learn + Solve: Shortcut, Trap & Fast Route Click to view shortcut, steps, and common mistake
Shortcut used, common trap, and the fastest solving route
- List the given numbers and units.
- Choose the formula that matches the asked value.
- Simplify carefully and compare with options.
A 40-litre solution contains 25% acid. Ten litres of water is added. What is the new percentage of acid?
Explanation
Correct Answer: D
Method / Topic: Mixture and Allegation
The answer follows from the arithmetic relation between the given values.
Short Explanation
Detailed Explanation
Correct Answer: D
Method / Topic: Mixture and Allegation
Acid quantity=40×25%=10 litres. Total volume after adding water=50 litres, so acid percentage=10/50×100=20%.
See full explanation + shortcut trick
Use the free answer check first, then unlock the complete breakdown, shortcut path, and richer explanations for similar questions.
Keep Practicing This Pattern
Recommended Next Practice
Use these suggestions after solving the practice questions above.