Substitute teachers with silvergrove school district get paid by the day, although subs with teaching credentials earn a different amount than subs without credentials. yesterday, 6 non-credentialed subs and 4 credentialed subs taught in the district. that cost the district $678. today, 11 non-credentialed subs and 3 credentialed subs taught, receiving $866 from the
district. how much do subs get paid?
subs with credentials get paid $ per day,
subs without credentials get paid $
per day.