In the shop there were yellow flowers with 3 petals, pink flowers with 5 petals and blue flowers with 7 petals.
Jason chose 3 bunches with the same number of flowers in each bunch. Each bunch also had at least one flower of each colour. As his Granny was 67 that day he choose flowers so that the petals in all three bunches added to 67.
How many of each coloured flower did Jason buy?