Question

Express 0.21 in the form p/q​

Answer 1

0.21 ( bar on 21)

Let X = 0.21

Then X = 0.2121 --------(1)

Multiply eq. (1) by 100 we get,,,

100X =21.2121 -------(2)

Subtracting eq. (1) from eq. (2) ,,we get

100x = 21.2121

X=0.21

99x = 21

X = 21/99 = 7/33 (P / Q form)

Hence,,,

0.21 ( bar on 21)is the form of 7/33 which is in the form of p/q..

Hope it will help you....