SOLD in April =20 Number of printers sold in May =12 \[\therefore \]Collection of MONEY in April = RS \[\left( 20\times 250 \RIGHT)\]= Rs 5000 Collection of money in May =Rs \[\left( 12\times 250 \right)\]= Rs 3000 \[\therefore \]Required amount of money = Rs \[\left( 5000-3000 \right)\]=Rs 2000