Question

If a:b=4:5 ,b:c=6:9 ,c:d=15:19 then a:b:c:d=?
a- 8:10:15:19
b- 10:11:15:19
c- 8:9:15:19
d- 19:15:6:8

Answer 1

Step-by-step explanation:

this answer is not there in option but according to method this is only true.

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