Question

If a : b = 3 : 4 , find ( a+2b) : ( 3a + b ) .

Answer 1

Answer:

As a:b=3:4

a=3

b=4

Then,

a+2b

= 3+(2x4)

=3+8

=11

3a + b

=(3x3) + 4

=9+4

=13

( a+2b) : ( 3a + b )

= 11:13

Answer 2

find {a+ 2b} : {3a + b}

so first condition {a +2b}

is a 3