English

Express the Following Decimal as a Rational Number. 2.67 - Mathematics

Advertisements
Advertisements

Question

Express the following decimal as a rational number.

2.67

Sum

Solution

Let x = 2.67
Then, x = 2.676767.....       ....(1)
Here, the number of digits recurring is 2, so we multiply both sides of the equation (1) by 100.
∴ 100x = 100 x 2.676767....
= 267.8989.....       ....(2)
On subtracting (1) from (2), we get
99x = 265

∴ x = `(265)/(99)`

∴ 2.67 = `(265)/(99)`

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Irrational Numbers - Exercise 1.1

APPEARS IN

Frank Mathematics [English] Class 9 ICSE
Chapter 1 Irrational Numbers
Exercise 1.1 | Q 4.6
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×