Question

If a:b=2:3 and b:c=4:5andc:d=6:7 find a:d​

Answer 1

Answer:

Step-by-step explanation:

given - a:b = 2:3

a/b = 2/3                       - (1)

b:c = 4:5

b/c = 4/5                      - (2)

Multiply (1) and (2),

a/b*b/c = 2/3*4/5

a/c = 8/15                        - (3)

c:d = 6:7

c/d = 6/7                          - (4)

Multiply (3) and (4).

a/c*c/d = 8/15*6/7

a/d = 48/105 => 16/35

a:d = 16:35