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प्रश्न
A truck consumes 28 litres of diesel for moving through a distance of 448 km. How much distance will it cover in 64 litres of diesel?
योग
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उत्तर
Let the truck cover x in 64 litres of diesel.
| Diesel (in litres) | 28 | 64 |
| Distance (in km) | 448 | x |
It is the case of direct variation
`⇒"x"_1/"y"_1="x"_2/"y"_2`
`⇒28/448=64/"x"`
i.e., 28x = 64 × 448
`"x"=(64xx448)/28`
= 1024 km
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