(04.06 MC) A bicycle manufacturing company makes a particular type of bike Each child bike requires 4 hours to build and 4 hours to test. Each adult bike requires 6 hours to
build and 4 hours to test. With the number of workers, the company is able to have up to 120 hours of building time and 100 hours of testing time for a week. If c
represents child bikes and a represents adult bikes, can the company build 5 child bikes and 15 adult bikes in a week.