A grocer mixes x kg of Grade A and Y kg of Grade B nuts to get 60 kg of mixed nuts. Write and equation involving x and y to represent this information.

The grocer sells all the mixed nuts at 9.00 per kg. He receives the same amount of money as when he sells the Grade A nuts and the Grade B nuts separately at 10.00 per kg and 6.00 per kg respectively. Write and equation involving x and y to represent this information