Question

Given A:B =4:3,find A, if A+B=28

Answer 1

A/B=4/3
B=3A/4
put in equation
A+3A/4=28
A=16

Answer 2

A:B=4:3
mean.
A=4X
B=3X

SO

USE SECOND EQ ....
A+B=28
4X+3X=28

7X=28
X=4


HENCE *
A=

4×X= 4×4= 16


AND

.B=

3x= 3×4=12




A=