Find LCM of following decimals

0.6, 0.7, and 0.5.

210

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2.1

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Solution

The correct option is B
21

Given decimals are 0.6, 0.7 and 0.5. Converting these decimals to fractions

0.6 = $\frac{6}{10}$

0.7 = $\frac{7}{10}$

0.5 = $\frac{5}{10}$

we know that,

LCM of fractions = $\frac{L C M o f n u m e r a t o r s}{H C F o f d e n o m i n a t o r s}$

HCF of denominators is 10 and LCM of numerators is 210.

So, LCM of the given decimals
= $\frac{210}{10}$

= 21

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