Solution
a : b = 2 : 3 Eq.(i)
a : d = 3 : 4 Eq.(ii)
From Eq.(i) and Eq.(ii).
a : b : d = $$(2\times3)$$ : $$(3\times3)$$ : $$(2\times4)$$
= 6 : 9 : 8 Eq.(iii)
e : d = 3 : 5 Eq.(iv)
From Eq.(iii) and Eq.(iv).
a : b : d : e = $$(6\times5)$$ : $$(9\times5)$$ : $$(8\times5)$$ : $$(3\times8)$$
= 30 : 45 : 40 : 24
e : b = 24 : 45
= 8 : 15
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