Question

after how many years will the salaries offered in company a and b be the same

company a starting 24000 yearly 3000

company b starting 30,000 yearly 2400

Answer 1

$24000+3000x=30000+2400x$
$600x=6000$
$x=10years$

Check:
$24000+3000(10)=30000+2400(10)$
$54000=54000$ CHECKS