10+5x+5y is the simplified version
The constant of proportionality is the ratio between two directly proportional quantities. Two quantities are directly proportional when they increase and decrease at the same rate. The constant of proportionality k is given by k=y/x where y and x are two quantities that are directly proportional to each other.
Just look it up you can find the answers you are looking for
Step-by-step explanation:
Akmal=A
Aisyah=B
Atikah=C
B=m
A=2m
C=2m+25
C-B=?
2m+25-m=
=m+25
