How to find the length of a major arc

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.

Convert 2000 swiss francs to dutch guilders

Divide. write in simplest form 41/6 divided by 10