Question

Express 2.01515 in p/q

Answer 1

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let x=2.01515.. --------(1)
(multiply both side by 10)
10x=20.1515... ---------(2)

from equation1
x=2.01515..
(multiply both by 1000)
1000x=2015.1515.. ----------(3)

now,subtract (2) from (3)

1000x-10x = 2015.1515... - 20.1515....
990x = 1995
x=1995/990

hope it'll help