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A mixture of 7% disinfectant solution is to be made from 8% and 2% disinfectant solutions. How much of each solution should be used if 18 gallons of 7% solution are needed?

Coffee beans worth \$10.50 per pound are to be mixed with coffee beans worth \$7.50 per pound to make 80 pounds of beans worth \$8.25 per pound. How many pounds of each type of coffee bean should be...

1.)how many atoms of nickel are there in 40.08 moles ni 2.)how many moles of argon are there in 9.80 x 10^25 atoms 3.)How many moles of LIF are there in 60.09g? 4.)how many...

Hong is a software salesman. His base salary is \$2400 , and he makes an additional \$50 for every copy of English is Fun he sells. Let P represent his total pay (in dollars),...

Research interest rates for a savings account, checking account, and money market account at different financial institutions. Note the compounding for each. How much would \$10,000 be worth in each...

You are ordering photo prints online to send out to all your friends for the holidays. The first 20 prints cost 12¢ each. If you order more than 20, The price of the additional prints goes down to...

The state lottery offers to pay winnings in 25 annual payments or one lump sum, sometimes called a cash-out option. This week’s lottery has a jackpot of \$30 million and a cash-out value of...