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प्रश्न
The cost of 12 quintals of soyabean is 36,000 rupees. How much will 8 quintals cost?
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उत्तर
Let us suppose the cost of 8 quintals of soyabean is `x` rupees.
The number of soyabeans and their cost vary in direct proportion.
∴ `12/36,000=8/x`
⇒ x = `(8xx36,000)/12`
⇒ x = 24,000
Hence, the cost of 8 quintals of soyabean is 24,000 rupees.
संबंधित प्रश्न
Which of the following quantities vary directly with each other?
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(ii) Weight of articles (x) and their cost (y).
(iii) Distance x and time y, speed remaining the same.
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(v) Speed (x) and time (y) (distance covered remaining the same).
(vi) Area of a land (x) and its cost (y).
Complite the following table given that x varies directly as y .
| x | 5 | ... | 10 | 35 | 25 | ... |
| y | 8 | 12 | ... | ... | ... | 32 |
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