A bus can cover 60 km using 5 litres of diesel. Find the diesel required for a bus journey of 144 km.

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Solution

The correct option is B 12
Diesel required to cover a 60 km journey $= 5 l i t r e s$
Diesel required to cover 1 km journey $= \frac{5}{60} l i t r e s = \frac{1}{12} l i t r e s$
Diesel required to cover a 144 km journey $= \frac{1}{12} \times 144 l i t r e s = 12 l i t r e s$ .

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A bus can cover 60 km using 5 litres of diesel. Find the diesel required for a bus journey of 144 km.

The correct option is B 12Diesel required to cover a 60 km journey =5 litres Diesel required to cover 1 km journey =560 litres=112 litres Diesel required to cover a 144 km journey =112×144 litres=12 litres.

The correct option is B 12
Diesel required to cover a 60 km journey $= 5 l i t r e s$
Diesel required to cover 1 km journey $= \frac{5}{60} l i t r e s = \frac{1}{12} l i t r e s$
Diesel required to cover a 144 km journey $= \frac{1}{12} \times 144 l i t r e s = 12 l i t r e s$ .