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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.
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