How many liters of water must sharon add to 5 liters of a soap and water mixture which is 36% soap to create a solution which is 12% soap?

Which of the following properties can be used to show

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

What is the first step of an indirect proof of a number that is divisible by two