Question

If the compund ratio of 7:5 and 8:x is 84:60 find x

Answer 1

If the compound ratio of 5 : 8 and 3 : 7 is 45 : x. Find the value of x.

Compound ratio of 5:8 and 3:7 = 5/8 ? - 3/7 = 15/56.

Now product of extremes = Product of means => 15:56 :: 45:x => 15x = 2520 => 2520/15 = 168.

x = 168.