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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.​

Respuesta :

Answer:

subs with credentials get paid $87 per day. subs without credentials get paid $55 per day.

Step-by-step explanation:

let x be the cost subs with credential get paid per day and y be the cost subs without credential get paid per day

so we get

[tex]4x + 6y = 678 \\ 3x + 11y = 866[/tex]

using simultaneous equation by substitution method you get x=87 and y=55

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