the price of sugar has risen by 20% by how much % must a housewife reduce her consumption of sugar so as not to increase her expenditure on it
Answers
Answered by
92
suppose cost price of sugar is 100 per 1 kg
Now it is increased to 120 i.e 20%
But the 100 rs is the amount that has to be spent and not more than that
so we have calculate how much sugar we will get for 100 now
100*100/120=83.33
so 100-83.33=17% approximately will be reduced
Now it is increased to 120 i.e 20%
But the 100 rs is the amount that has to be spent and not more than that
so we have calculate how much sugar we will get for 100 now
100*100/120=83.33
so 100-83.33=17% approximately will be reduced
Answered by
34
Price × consumption = constant
initial price = p
changed price = p' = 1.2p
initial consumption= C
changed consumption= c'
p'c' = pc
1.2p × c' = pc
c' = pc/1.2p
c' = c/1.2 = 0.83c
Reduction in consumption is 17%
initial price = p
changed price = p' = 1.2p
initial consumption= C
changed consumption= c'
p'c' = pc
1.2p × c' = pc
c' = pc/1.2p
c' = c/1.2 = 0.83c
Reduction in consumption is 17%
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