Three letters weigh 1/2 ounces,
1/4 ounces, and
5/12 ounces
What is the total weight of the letters? Simplify your answer.

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.