Question

If a/9×9/20×4/9=1/9,thevalueofais

a) 45 b)5/18 c)5 d)46/9

Answer 1

The equation goes like this......
first cross multiply a/9x9/20 where u'll get a/20
next cross multiplying a/20x4/9 will result a/45 
now u'll  have a/45=1/9 which simply will end up again cross multiplying 9a=45
and then u'll get a=45/9
                         = 5
Hope it helped .... :) !!

Answer 2

a/9*9/20= a/20
a/20x4/9= a/45 
a/45=1/9
a=1/9*45=5
a=5