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प्रश्न
If the cost of 6 cans of juice in ₹ 210, then what will be the cost of 4 cans of juice?
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उत्तर
Let the cost required be x
| Number of cans of juice | 6 | 4 |
| Cost in rupees | 210 | x |
As number of cans increases cost also increases.
∴ They are in direct proportion
∴ `(x_1)/(y_1) = (x_2)/(y_2)`
`6/210 = 4/x`
6 × x = 4 × 210
x = `(4 xx 210)/6`
x = 140
Cost of 4 cans of juice = 140
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