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Question
If x and y vary directly, find the values of x, y, and z:
| x | 3 | x | y | 10 |
| y | 36 | 60 | 96 | z |
Solution
x and y are in direct variation
`∴3/36="x"/60="y"/96=10/"z"`
`⇒3/36="x"/60,3/36="y"/96,3/36=10/"z"`
x =`3/36xx60,` y =`3/36xx96,`
z =`10xx36/3`
⇒ x = 5, y = 8, z = 120
| x | 3 | 5 | 8 | 10 |
| y | 36 | 60 | 96 | 120 |
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