Question

If a :b=3:4, then (a + b): (4a + 5b) is​

Answer 1

Answer:

a:b=3:4

so, (a+b):(4a+5b)

now let the a and b be x

now,

3x+4x:4×3x+5×4x

=7x:32x

=7x/32x

hope it will help u

Answer 2

U can understand this from this image.

Hope this will help u.