119) The price of an article has been reduced by 25%. In order to rest

1.	119) The price of an article has been reduced by 25%. In order to restore it to theoriginal price, the new price must be increasĂŠd by
Answer» Let,Old price = xNew price = y According to questiony = x - (25% of x)y = x - (25/100 × x)y = x - x/4y = 3x/4 ……(1) Now, in order to restore the original price (x) the new price (y) should be increased by zx = y + z4y/3 = y + z ……[∵ from (1)]z = 4y/3 - yz = y/3 ∴ New price should be increased by One-third.

119) The price of an article has been reduced by 25%. In order to restore it to theoriginal price, the new price must be increasĂŠd by

Answer»

Let,Old price = xNew price = y

According to questiony = x - (25% of x)y = x - (25/100 × x)y = x - x/4y = 3x/4 ……(1)

Now, in order to restore the original price (x) the new price (y) should be increased by zx = y + z4y/3 = y + z ……[∵ from (1)]z = 4y/3 - yz = y/3

∴ New price should be increased by One-third.