Q 1649312213.     A bike consumes `20 mL` of petrol per `kilometre`, if
it is driven at a speed in the range of `25-50 km//h`
and consumes `40 mL` of petrol per `kilometre` at
any other speed. How much petrol is consumed by
the bike in travelling a distance of `50 km`, if the
bike is driven at a speed of `40 km//h` for the first
`10 km`, at a speed of `60 km//h` for the next `30 km`
and at a speed of `30 km//h` for the last `10 km` `?`

CDS 2016
A

`1L`

B

`1.2L`

C

`1.4L`

D

`1.6L`

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