find a :c when a :b = 2:5 and b:c =4:7 so please answer step by step the answer is 8: 35 i dont know step by step so please answer step by step
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a:b=2:5
b:c=4:7
a:c=?
since a/b=2/5
b=5a/2
b:c=4:7
5a/2:c=4:7
5a/2c=4/7
a/c=4/7(2/5)
a/c=8:35
b:c=4:7
a:c=?
since a/b=2/5
b=5a/2
b:c=4:7
5a/2:c=4:7
5a/2c=4/7
a/c=4/7(2/5)
a/c=8:35
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