<PRE><B>Question 808943</B>
2s + 5a = 1300
s + a = 500
s = 500 - a
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2(500 - a) + 5a = 1300
1000 - 2a + 5a = 1300
1000 + 3a = 1300
3a = 300
Answer:
a = 100
s = 400
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