Question

if the compound ratio of 7: 5 and 8 :x is 84:60 find x

Answer 1

7:5::8:x =84/60
7×8:5×x=84/60
56/5x=84/60
56×60=84×5x
3360=420x
3360/420=x
8=x

Answer 2

Answer:

x=8

Step-by-step explanation:

7:5 :: 8:x = 84:60

56:5x = 84:60

Now we have to do product of mean= product of extreame

56X60 = 84X5x

3360=420x

Then we have to divide

3360/420

x=8