Question

If a:b is 3:4,b:c is 5:3 and a:d is 2:5, find the ratio of c:d​

Answer 1

c:d= 30/75

= 2/5.

I hope answer will be right

Answer 2

Answer:

None of these

a:b = 3:4

b:c = 5:3

a:b:c = 15 :20: 12 Equation 1

( By taking LCM of 4 & 5 )

Now as given

a:d = 2:5 Equation 2

To make value of (a) same in equation 1 & 2 we will take the lcm of 15 & 2 which is 30

~ a:b:c = 15:20:12 * ( 2 )

~ a:b:c = 30 :40: 24

Now

a:d = 2:5 * (15)

a:d = 30:75

~ a:b:c:d = 30:40:24::75

~ c:d = 24:75

c: d = 8:25