Question

if a:b=3:4,b:c=7:5,c:d=9:7,then find the value of a:b:c:d.​

Answer 1

a:b:c:d=189:252:180:140

a:b=189:252=3:4

b:c=252:180=7:5

c:d=180:140=9:7

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