Question

If 2/5 of a number exceeds 1/7 of the same number by 36. Find the number.

Answer 1

Let the number be x.
2/5 of that no:2x/5
1/7 of that no:x/7.
According to the question:
2x/5-x/7=36
or,(2x*7-x*5)/35=36
or,(14x-5x)/35=36
or,9x/35=36
or,x=36*35/9
=140
Ans:The number is 140.

Answer 2

Answer:

Let the number be=x

2/5 of that no.2x/5

1/7 of that number:x/7

2x/5-x/7=36

9x/35=36

x=36×35/9

=140