Question

the compound ratio of is 3:4 and the inverse ratio of 4:5 is 30:x, then x is

Answer 1

the inverse ratio of 4:5 is 5:4

the compound ratio of 3:4 and 5:4

= 3×5 : 4×4

= 15 : 16

given,

15 : 16 = 30: x

x =(30×16)/15

x = 32

Answer 2

inverse ratio of 4:5 is 5:4

compound ratio of 3:4 and 5:4

3x5 4x4

15 16

given,

15 16 30: X

x(30 x 16)/15

x 32