Question

8.) If a + 2b + 3c = 20 and 2a + 4b + c = 25, then c = ____
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Answer 1

Answer:

c = 3

Step-by-step explanation:

a + 2b + 3c = 20 .... (1)

2a + 4b + c = 25 .... (2)

2 × (1) - (2)

6c - c = 40 - 25

5c = 15

c = 3