Question

If a : 5=b:7=c:8, find a+b+c:a​

Answer 1

Answer:

20.5

Explanation:

5+7+8:5

=12+8:5

=12+8.5

=20.5

I hope this may help you.

Please mark me as the BRAINLIEST.

Answer 2

Answer:

a/5= b/7 = c/8

a/5 = b/7

So, b/a = 7/5 ...(1)

And,

a/5=c/8

So, c/a = 8/5 ...(2)

=> (a+b+c)/a = a/a + b/a + c/a

=> = 1 + b/a + c/a

=> = 1 + 7/5 + 8/5 (From 1 and 2)

=> =1 + 15/5

=> = 1 + 3

=> =4

Answer: 4