Question : If the price of onion increases from INR 60 per kg to INR 75 per kg, then by what percentage should a household decrease the consumption of onion so that expenditure remains the same?
Option 1: 40%
Option 2: 25%
Option 3: 20%
Option 4: 30%
Correct Answer: 20%
Solution :
Let the household consume $a$ kgs of onion earlier and $b$ kgs of onion later.
⇒ The price paid by the household earlier = $60a$
⇒ The price paid by the household now = $75b$
Since both prices should be the same,
⇒ $ 60a = 75b$
⇒ $b = \frac{4a}{5}$
$\therefore$ Required percentage = $[\frac{(a-\frac{4a}{5})}{a}] × 100=\frac{100}{5}= 20\%$
Hence, the correct answer is 20%.
Related Questions
Know More about
Staff Selection Commission Multi Tasking ...
Application | Cutoff | Selection Process | Preparation Tips | Eligibility | Exam Pattern | Admit Card
Get Updates Brochure
Your Staff Selection Commission Multi Tasking Staff Exam brochure has been successfully mailed to your registered email id “”.
