Question

4a/9 = 100/45

Answer 1

a = 5

Answer 2

How did you get that answer
?

Answer 3

45*a=100*9

Answer 4

by cross multiplying

Answer 5

45*4a=180a

Answer 6

Then don't you divide?

Answer 7

=900

Answer 8

900 divide by 180

Answer 9

a=5 use same procedure for smilar questions

Answer 10

9*100=45*4a 900=180a a=5