Question

the ratio compounded of 4:9 and the duplicate ratio of 3:4 is

Answer 1

dupliate ratio of 3:4, will be the square of the ratio, so this will be 9:16

and the compounded ratio will be product of two ratios

4:9 x 9:16 = 1:4 ( 9 will be cancelled and 16 by 4 )

hope it will help u