Question

If a: b=c: d = 4:9, find the value of ab: bc and a+b :c+d

​

Answer 1

Answer:

4:9 and 1

Step-by-step explanation:

pls mark me brainliest

Answer 2

Answer:

ab:bc = 1:1

a+b:c+d=1:1

Step-by-step explanation:

here, value of a=c=4

and b=d=9

so,ab:bc=4×9:9×4

=36:36=1:1

similarly,a+b:c+d= 4+9:4+9

= 13:13= 1:1