Divide 15 sweets between Manu and Sonu so that they get 20 % and 80 % of them respectively.
We have 15 sweets.
Manu wants 20% and Sonu wants 80% of the sweets respectively.
Therefore, 20% of 15
=
and 80% of 15 sweets
Hence give 3 sweets to Manu and 12 sweets to Sonu.