infosys - the number of cuffs and collar pieces which belong to charan and pawan there total is 30 charan and pawan give all of them to the laundry charan collects half the number of cuffs and onethird the number of collars and pays his share of 27 cents 4cuff - skillgun

Here the total number of the cuffs be X
and the total number of the collarbe 30-X
Now Charan Collects 1/2*X + 1/3*(30-X) = X/6 + 10
so pawan would collect 1/2*X + 2/3*(30-X) = -X/6 + 20
by inspection and trial and error we can see that X=12
now putting X=12 in first equation we get 12 and puttin in eqn 2 we get 18
so charan pays 27 cents for 12 pieces
so pawan will pay cents for his 18 pieces