if a : b : : 2 : 3, and b : c : : 4 : 5 then find a : b : C.
a) 8 : 12 : 15
b) 4 : 3 : 5
c) 4 : 6 : 9
d) 2 : 4 : 7
Sol:
a:b=2:3
b:c=4:5
a:b:c=8:12:15
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