a plumber finished three jobs on tuesday. the first two only cost the owner $45 trip fee because they took very[..]

The sum of two numbers is twenty. Three times the small number is equal to two times the larger

What is the two-digit mystery number? It is between 40 and 50. The ones digit is less than the ten digit. The sum[..]

7kg of soybean oil which cost $4/kg were combined with 14kg of canola oil which costs $1/kg. Find the cost per kg of[..]

There are approximately 2 lbs of muscle for every 2 lbs of body weight of a certain animal. For a 69-lb animal, how[..]

The average daily balance of a checking account is the sum of the daily balances in a given period divided by the[..]

A motel clerk counts his $1 and $10 bills at the end of a day. He finds that he has a total of 64 bills having a[..]

Eric's mother wanted him to do R chores. Eric did 3 times R chores plus 5 more chores. AT the end of the day, Eric[..]

If one root of the quadratic equation ax^2+bx+c=0 is the square of the other, then show that b^3+a^2c+ac^2=3abc.

find two consecutive odd positive intigers whose squares differ by 6.