Shawna wants to make a 10% alcohol solution. She has already poured 10L of pure water into a beaker. How many L of 60% alcohol solution must she add to this to create the desired mixture?

You made a $50,000 down payment to buy an apartment building. you got a loan from a bank for the rest of the cost. each month, you pay the bank $1,500 on the loan. you charge $1,000 per month to rent each of the 6 apartments.

Ryan charges his neighbors $17.50 to wash their car. How many cars must he wash next summer if his goal is to earn at least $1,500?

How do you solve 4x-5=7+4y for y an easier way

What is 7/44 in lowest terms

Why its important to líne up decimals.

Find the product of 5,295 and 9

How much is three shirts if you spend 26.79

Molly can make 4 pancakes in 6 minutes what is her cooking rate in pancakes per hour?

What are the zeros of x (squared) + 2x + 3 in imaginary form

2 quarters, 1 dime, 2 nickles, and 3 pennies ... what fraction of the coins were either nickles or pennies?