Oscar saves 40% of his monthly check for college. He earned $450 last month. How much money did Oscar save for college?
1 answer:
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Answer:
250 turkey sandwiches were delivered.
There were 230 roast beef delivered.
115 PB&J were delivered.
Step-by-step explanation:
This question is solved using a system of equations.
I am going to say that:
x is the number of turkey sandwiches.
y is the number of roast beef.
z is the number of PB&J.
Donnie delivered 595 box lunches
This means that
There were 20 more turkey sandwiches then roast beef.
This means that
There were twice as many roast beef has PB&J.
This means that .
So in the second equation, we have that
Replacing this in the first equation:
115 PB&J were delivered.
250 turkey sandwiches were delivered.
So
There were 230 roast beef delivered.