Question

a:b = 2:3 and b:c =5:7 then what is a:c​

Answer 1

Answer:

10 : 21

Step-by-step explanation:

a : b = 2 : 3 and b : c = 5 : 7

First make the ratio parts of B equal, that would be my multiplying to make them the Lowest Common Multiple.

LCM of 3 and 5 = 15.

Hence, multiply the first ratio with 5 as 2 * 5 : 3 * 5 = > 10 : 15

Thus, multiply the second ratio with 3 as 3 * 5 : 3 * 7 = 15 : 21

Now, since A:B and B:C have common values, you can multiply the two ratios to get A:C.

A : B * B : C

=> 10/15 * 15/21

=> 10/21

Therefore, a : c = 10 : 21

Hope it helps!

Answer 2

$\bigstar\large\red{\underline{Your\:Answer}}$

a : b = 2 : 3 = 10 : 15 [ multiplying by 5 ]

b : c = 5 : 7 = 15 : 21 [ multiplying by 3 ]

Now, a : b : c = 10 : 15 : 21

So, a : c = 10 : 21

Your required answer is 10 : 21.

Hope this helps uh....

❄ Be brainly ❄