reenu got 2/7 part of the apple while sonal got 4/5 part of it. who got larger part by how much

Reenu got= 2/7
Sonal got= 4/5
First we find the L.C.M of the denominators
That is, 7 x 5= 35
Now we take 35 as the common denominator and multiply the numerator with the respective numbers with which the denominator is multiplied
= 2 x 5 - 4 x 7
____________
          35
=    10 - 28
____________
         35
Therefore, Sonal ate more
= 4 x 7 - 2 x 5
____________
          35
=    28 - 10
____________
         35
= and by             18             Sonal ate more
                       ______
                           35