Question

The price of pulses has rise by $25\%.$If a family want to keep their expenses on pulses the same as earlier, the family will have to decrease its consumption of pulses by

• A. $25\%$
• B. $20\%$
• C. $80\%$
• D. $75\%$

Answer 1

The correct option is B $20\%$

Let the initial expenses on pulses was Rs. 100.

Now, price of pulses rises 25%

So, to buy same amount of pulses they need to expenses = $100+25$% of 100

$=100+\frac{25}{100}\times 100$

$=Rs125$

But, they want to keep expenses on sugar,

So that they have to cut Rs 25 in the expenses to keep it Rs 100.

Now, % decreases in consumption

$\frac{25}{125}\times 100=20$%