Question

express.the.following.as.rational.number.in.rational.from.2.15.bar

Answer 1

Hey dear!!

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==> Given :

2.15̅

Let x = 2.15 ..........(1)

As there are two digit number before decimal point hence we will take two zeroes with one.So it will be 100 . And we will multiply 2.15 by 100.we get,

∴ 100x = 215.15 .......(2)

Now, subtract the equation no. (1) and (2) we get,

100x = 215.15
- x = 2.15
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99x = 213

x = 213/99

Therefore, the rational form of 2.15 is 213/99