Question : If the price of petrol is increased by 28%, by what percentage should the consumption be decreased by the consumer if the expenditure on petrol remains unchanged? (Correct to 2 decimal places)
Option 1: 12.35%
Option 2: 21.88%
Option 3: 20.25%
Option 4: 25.75%
Latest: SSC CGL preparation tips to crack the exam
Don't Miss: SSC CGL complete guide
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: 21.88%
Solution : Given that the price of petrol has increased by 28% Let the price of petrol before the increase be Rs. 100$a$ per 1000 ml ⇒ New price = 100$a$ × 128% = Rs. 128$a$ Now if the consumer wants to maintain the expenditure as before he will still buy petrol for Rs. 100a In Rs. 100a he will get = $\frac{1000}{128a}$ × 100$a$ = 781.25 ml ⇒ Consumption decrease = 1000 ml - 781.25 ml = 218.75 Decrease percentage = $\frac{218.75}{1000}$ × 100 = 21.875 ≈ 21.88% Hence, the correct answer is 21.88%.
Candidates can download this ebook to know all about SSC CGL.
Admit Card | Eligibility | Application | Selection Process | Preparation Tips | Result | Answer Key
Question : If the price of petrol is increased by 81%, by what percentage should the consumption of petrol be decreased by the consumer if the expenditure on petrol remains unchanged? (Correct to two decimal places).
Question : If the price of petrol increased by 7%, then by what percentage should the consumption be decreased by the consumer, if the expenditure on petrol remains unchanged?
Question : If the price of salt decreases by 20%, then by what percentage should consumption be increased to keep the expenditure same?
Question : If the cost price is 72% of the selling price, then what is the percentage of profit? (Correct to 2 decimal places)
Question : If the radius of a right circular cylinder open at both ends is decreased by 25% and the height of the cylinder is increased by 25%, the curved surface area of the cylinder thus formed:
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile