Question

If A : B= 6 : 7 and B : C =8 : 9. Them find C : A​

Answer 1

Answer:

21/16

Step-by-step explanation:

A=6x. B=7x

B=8y. C=9y

now. 7x =8y. since both equals to B y/x=7/8

C/A= 9y/6x = (9/6)*(7/8)= 21/16

Answer 2

Answer:

C:A =21/16

Step-by-step explanation:

A:B=6:7 B:C=8:9

then,A/B*B/C=A/C

=6/7*8/9

=16/21

Therefore,A/C=16/21

C/A=21/16