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प्रश्न
A cement factory makes 7000 cement bags in 12 days with the help of 36 machines. How many bags can be made in 18 days using 24 machines?
उत्तर
Let he required number of cement bags be x.
| Days | Machines | Cement bags |
| 12 | 36 | 7000 |
| 18 | 24 | x |
Number of days more ⇒ More cement bags.
∴ It is direct variation.
∴ The multiplying factor = `18/12`
Number of machines more ⇒ More cement bags.
∴ It is direct variation.
∴ The multiplying factor =`24/36`
∴ x = `7000 xx 18/12 xx 24/36`
`(7000 xx 18 xx 24)/(12 xx 36)`
x = 7000 cement bags
7000 cement bags can be made
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