A sum of rupees 1800 is divided among a,b,c.the ratio 3:5:7.what is share of c
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Let the ratio multiplied be x
Ratio = 3x : 5x : 7x
A.t.q.,
a + b + c = 1800
3x + 5x + 7x = 1800
15x = 1800
x = 1800/15
x = 120
Share of c = 7x
=> c = 7 × 120
=> c = 840
Answer: Rs 840
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