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 :

 X 3.9 u v 221 Y 3 7 13 w

EXPLANATION
Explain TypeExplanation Content
Text

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

View Contents
(Concept based Learning and Testing for [6th - 10th], NTSE, Bank & Govt. Exams)
Self Learning
Testimonials
STUDENT FEEDBACK - Aman Kumar Shrivastava C/o ABHYAS Academy
10th
The experience was nice. I studied here for three years and saw a tremendous change in myself. I started liking subjects like English and SST which earlier I ran from. Extra knowledge gave me confidence to overcome competitive exams. One of the best institutes for secondary education.

#### Other Testimonials

Courses We Offer
(Concept based Learning and Testing for [6th - 10th], NTSE, Bank & Govt. Exams)