If a: b = 2/9: 1/3, b: c = 2/7: 5/14 and d: c = 7/10: 3/5 then a: b: c: d = ?

If a: b = 2/9: 1/3, b: c = 2/7: 5/14 and d: c = 7/10: 3/5 then a: b: c: d = ?
(a) 16: 24: 25: 50
(b) 18: 24: 30: 35
(c) 16: 24: 30: 35
(d) 16: 24: 30: 50

Anurag Mishra Professor Asked on 30th June 2016 in Maths.
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    Answer: (c) 16: 24: 30: 35 

    Anurag Mishra Professor Answered on 1st July 2016.
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