SOLUTION: How do I solve this: 1/4S=1/4+1/10+1/20

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Question 69346: How do I solve this: 1/4S=1/4+1/10+1/20
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
1/4s=1/4+1/10+1/20
1/4s=(5+2+1)/20
1/4s=8/20
1/4s=2/5 cross multiply we get
5s=8
s=8/5 answer
proof
1.4*8/5=8/20
8/20=8/20