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slavikrds [6]
3 years ago
12

PLZZZZ NEED HELP!!!!!

Mathematics
1 answer:
irinina [24]3 years ago
8 0
Use simultaneous equations
a + c =6 (1)
45a + 15c = 150 (2)
from (1)
c = 6-a (3)
sub 3 into (2)
so the answer is 45a + 15(6-a) = 150, so is B
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3 years ago
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2 years ago
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3 years ago
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