Compound ratio of 2:3 and 3:4 is____.

The compound ratio of 3:4 and 5:6 is __________

If the compound ratio of 1:2 and 3:4 is 6:x. Find the value of x

What term should be added to antecedent and subtracted from consequent of ratio 4 : 7 to make a compound ratio of 2 : 3 " and " 5 : 4 ?

Find the compound ratio of 2 : 7, 5 : 3 and 4 : 7

The mean proportional of 27 and 3 is____.

The compound ratio of 3:4 and the inverse ratio of 5:4 is 45:x. Find x.

The compound ratio of 3:4 and the inverse ratio of 4:5 is 15:x. Find x.