A person wishes to mix coffee worth $9 per lb with coffee worth $3 per lb to get 180lb of a mixture worth $5 per lb. How many pounds of the $9 and the $3 coffees will be needed?
60lb of $9 worth coffee and 120lb of $3 worth coffee note this answer is purely a trial and error based answer but the amount of money remains that is $5 worth of coffee multiplied by 180lb will give you $900. answers of coffee in lbs will/may vary but value($900) will be constant
