Question

solve...............Q.5

Answer 1

Hi there !
Here's the answer:


• If the price of a commodity increases by p%, then the reduction in consumption so as not to increase its expenditure is 'R%'.
R% = [(100p)/(100+p)]%


Now,
given,
Commodity = Vegetable
p% = 20%

R= [(100×20)/(100+20)]%
= [2000/120]%
= 16.67%

•°• Required reduction in vegetables consumption is 16.67% so as not to increase the expenditure.

:)
Hope it helps

Answer 2

let the original price of vegetables be
'₹ 100'

Find the increase:
------------------------

increase in price = 20 %

= 20% of original price = 20% of 100

= 0.2 × 100 = ₹ 20

Find the new price :
---------------------------

new price of vegetables = original price + increase

= ₹100 + ₹ 20 = ₹ 120

Difference = 120 - 100 = ₹20

so consumption should be decreased by ₹20

Find the decrease %:
-----------------------------

decrease% =(decrease × 100) /new price

= (20 × 100 )/120 = 16.67 %

therefore,
he should reduce his consumption by 16.67% .

Answer : required reduction = 16.67%

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