Question

IF a:b = 5:7 and b:c =21:17 .find the a:c​

Answer 1

Answer:

15:17

Step-by-step explanation:

a:b= 5:7

multiply by 3

(a/b)*(b/c)=15/17

Answer 2

Answer:

a:b=5:7

b:c=21:17

so,a/b=5/7

so,b/c=21/17

so,a/b=5*3/7*3=15/21

so,b/c=21*1/17*1=21/17

so,a:c=15:17