Answers

2016-02-13T18:34:47+05:30
Let amt for 1st prize=x
therefore, amt for 2nd prize = x-20
                amt for 3rd prize = x-20-20 = x-40
                amt for 4th prize = x-40-20 = x-60

therefore,
x+(x-20)+(x-40)+(x-60)=280
=>4x -120=280
=>x=100

therefore, 

1st prize=Rs.100
2nd prize=Rs.80
3rd prize=Rs.60
4th prize=Rs.40
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