Question

A shopkeeper sold an article at some profit. If he sold the article at 2/3rd of its actual
selling price, he would get 10% loss. Find the initial profit percentage
1) 35%
2) 30%
3) 40%
4) 25%
​

Answer 1

Answer:

(i)The rational number that does not have a reciprocal is 0. Reason:

0 = 0/1

Reciprocal of 0 = 1/0, which is not defined.

(ii) The rational numbers that are equal to their reciprocals are 1 and -1.

Reason:

1 = 1/1

Reciprocal of 1 = 1/1 = 1 Similarly, Reciprocal of -1 = – 1

(iii) The rational number that is equal to its negative is 0.

Reason:

Negative of 0=-0=0