The price of sugar goes up by 20% By how much per cent must a houseuge

1.	The price of sugar goes up by 20% By how much per cent must a houseugeMPLE15.reduce her consumption of sugar so that the expenditure on sugar remainisthe sume?
Answer» Price × consumption = constant initial price = pchanged price = p' = 1.2pinitial consumption= Cchanged consumption= c' p'c' = pc 1.2p × c' = pc c' = pc/1.2p c' = c/1.2 = 0.83c Reduction in consumption is 17%please like the solution 👍 ✔️

The price of sugar goes up by 20% By how much per cent must a houseugeMPLE15.reduce her consumption of sugar so that the expenditure on sugar remainisthe sume?

Answer»

Price × consumption = constant

initial price = pchanged price = p' = 1.2pinitial consumption= Cchanged consumption= c'

p'c' = pc

1.2p × c' = pc

c' = pc/1.2p

c' = c/1.2 = 0.83c

Reduction in consumption is 17%please like the solution 👍 ✔️