if a compound ratio is 7:5 & 8:x is 84:60 find x
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Thecompounded ratio of the two ratios a : b and c : d is the ratio ac : bd
apply this formula
7×8:x×5=84:60
8:x=12:12
therefore x=8
apply this formula
7×8:x×5=84:60
8:x=12:12
therefore x=8
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