The price of wheat has increse
By 12 preventing the reduction in consumption so there is no change on expenditure

1 thought on “The price of wheat has increse<br /> By 12 preventing the reduction in consumption so there is no change on expenditure”

1. Step-by-step explanation:

   Let

   ′

   x

   ′

   be cost of wheat and

   ′

   y

   ′

   be household consumption.

   ∴ Initial expense =xy

   Let new consumption =a

   new cost =x(x+

   100

   30

   )

   =

   10

   13x

   To keep expenditure same,

   new expense = old (initial) expense.

   ⇒

   10

   13x

   ×a=xy

   ⇒a=

   13

   10

   y

   decrease in consumption =y−a

   =y−

   13

   10

   y

   =

   13

   3

   y

   ∴ % decrease =

   y

   13

   3y

   ×100%

   =

   13

   3

   ×100

   =23

   3

   1

   %

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