Jotham needs 70 liters of a 50% alcohol solution. he has a 30% solution and an 80% solution available. how many liters of
the 30% solution and how many liters of the 80% solution should he mix to make the 50% solution?

42 liters of 30% alcohol solution will be needed.

28 liters of 80% solution will be needed.

Step-by-step explanation:

Jotham needs 70 liters of a 50% alcohol solution.

Let the 30% solution needed be x.

We get the following equation:

Solving this we get;

=>

=>

=>

x = 42

Hence, 42 liters of 30% alcohol solution will be needed.

And liters of 80% solution will be needed.

you never say the total so we cant find the percentage used for petrol

step-by-step explanation: