Question

Choose the correct alternative : 3. The cost of onion has increased by 20% . Ramen babu has decided not to alter the monthly expenses towards the purchase of onion. Calculate in percentage hoe much he will reduce the use of onion per month. (a) 20% (b) 25% (c) 16^2/3% (d) 83^1/3%​

Answer 1

Answer:

not understanding this ok

Answer 2

Given : The cost of onion has increased by 20% .

Ramen babu has decided not to alter the monthly expenses towards the purchase of onion.

To Find :  in percentage hoe much he will reduce the use of onion per month.

Solution:

Let say consumption of onion = C   units

Price of onion per unit = P  Rs

Total expenses on onion = CP   Rs

The cost of onion has increased by 20% .

=> New price = P + (20/100)P  = 1.2P  Rs

Expense is same = CP  Rs

New Consumption  = CP/1.2P  = C/1.2   = 5C/6

Reduction in consumption = C - 5C/6  = C/6

reduce the use of onion per month.  = (C/6C) * 100  = 16 2/3  %

he will reduce the use of onion per month. =  16 2/3  %

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