Maths / Direct and Inverse Variation / Direct Variation

QUESTION
 

If X varies directly as y, then find values of u, v and w in the table given below :

X3.9uv221
Y3713w

 

EXPLANATION
Explain TypeExplanation Content
Text

3.9times = 4 times 7 117=7u Rightarrow u=frac{11.7}{7}=1.67 (ii) 1.67 times 7=v times 13 rightarrow v=frac{1.67times7}{13} v=frac{11.69}{13}=0.89 (iii) 0.89times 13 =221times W 11.57=221W Rightarrow W=frac{11.57}{221} W=0.0523

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