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Question
Check whether x and y vary inversely or not.
| x | 10 | 30 | 60 | 10 |
| y | 90 | 30 | 20 | 90 |
Sum
Solution
xy = 10 x 90 = 900
= 30 x 30 = 900
= 60 x 20= 1200
= 10 x 90 = 900
xy are not equal.
x and y are not inversely proportional.
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Types of Variation
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