Stefanie bought a pencil and received change for $6.00 in 20 coins, all nickels and quarters. How many of each kind[..]

Christopher drove for 3 hours at a rate of 50 miles per hour and for 2 hours at 60 miles per hour. What was his[..]

A class of 25 students took a science test. 10 students had an average score of 80. the other students had an[..]

The average of a list of 6 numbers is 20. If we remove one of the numbers, the average of the remaining numbers is[..]

Victoria father is 5 times older than Victoria and Victoria is twice as old as her sister Mariela. In two years, the[..]

katerina is twice as old as her friend Antonella. Antonella is 5 years older than Sofia. in 5 years, katerina will[..]

five years ago, sara's age was half of the age she will be in 8 years. How old is she know?

A side and a diagonal of a parallelogram are 12 inches and 19 inches respectively. The angle between the diagonals,[..]

To measure the height of a building, a surveyor sets up his transit at a distance of 112.2 ft. from the building. He[..]

If a certain mixture of olive oil and vinegar has a total mass of 398.8 and a total volume of 424.2 , what is the[..]