Question

pls explain 13th one (a)

Answer 1

Answer:

650 is the answer

Step-by-step explanation:let x be the varaiable

12x/100+100x=728

12x+100x=72800

112x=72800

X=72800/112

=650

Answer 2

Answer: 650

Step-by-step explanation:

Let the no . X

So,

12x/100+100x=728

12x+100x=72800

112x=72800

x=72800/112x

x=650

HOPE IT IS HELP FULL