Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Percentages

Question:

If the tax on a commodity is diminished by 20% and its consumption increased by 15%, the revenue decreases by:

Options:

8%

12%

10%

6%

Correct Answer:

8%

Explanation:

Let initial price = 100x

Final price = 100x  × \(\frac{80}{100}\) × \(\frac{115}{100}\)

= 100x  × \(\frac{4}{5}\) × \(\frac{23}{20}\) 

= 92x

Required percentage = \(\frac{100-92}{100}\) × 100 = 8%