Harry and Gary have a total of 300 stickers. The ratio of the number of stickers Harry has to the ratio of the number of stickers Gary has is in the ratio 7:3 7 : 3\,7:3
Harry gives Gary some stickers. The ratio of the number of stickers Harry has to the ratio of the number of stickers Gary has is now in the ratio 8:7 8 : 7\,8:7
Work out how many stickers Harry gives to Gary. You must show all your working.
