(a) 33-%(b)372%(d)(c) 40%45%The price of an article has been reduced b

1.	(a) 33-%(b)372%(d)(c) 40%45%The price of an article has been reduced by 25%. In order terestore it to theoriginal price, the new price must be increased by2
Answer» Old price = xNew price = y According to question y = 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 1/3rd

(a) 33-%(b)372%(d)(c) 40%45%The price of an article has been reduced by 25%. In order terestore it to theoriginal price, the new price must be increased by2

Answer»

Old price = xNew price = y

According to question y = 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 1/3rd