Question

the price of rice has been increased by 40% by how much percentage must this New price be decreased to retain its former price​

Answer 1

Answer:

It should be decreased by 40%

Step-by-step explanation:

because original price was x so x + 40% of x is new price and x - 40%of x is old price

Answer 2

Answer:

let's price of rice is x

new price is x+40x/100

x(1+40/100)

x(1+2/5)

x(7/5)

let's y%is decreased to regain that price

x(7/5)-y%x(7/5)=x

x(7/5)-yx7/500=x

x[7/5-7y/500]=x

7/5-7y/500=1

7/5=1+7y/500

7/5=(500+7y)/500

700=500+7y

200/7=y

28.57%=y

therefore we have to decrease 28.57%of new price to regain the old price

Step-by-step explanation: