Maths / Direct and Inverse Variation / Direct Variation

QUESTION
 

12 books weigh 1.6 kg. What is the weight of 27 such books?

EXPLANATION
Explain TypeExplanation Content
Text

Let 27 books weigh x kg.

No of books1227
Weight (in kg)1.6x

It is a problem of direct variation xy = k

frac{12}{1.6}=frac{27}{x}

or x=frac{1.6X257}{12}=3.6

Thus 27 books weigh 3.6 kg

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