Question
PSLE
Ian had tarts and Harry had croissants. Both gave half of what they had to each other. Ian sold 9 tarts and Harry sold 20 croissants. In the end, the ratios of tarts to croissants for Ian and Harry were 1 : 8 and 1 : 6 respectively. How many tarts did Ian have at first?
4 m

Click button first when a symbol is required. X

PSLE
Ian had tarts and Harry had croissants. Both gave half of what they had to each other. Ian sold 9 tarts and Harry sold 20 croissants. In the end, the ratios of tarts to croissants for Ian and Harry were 1 : 8 and 1 : 6 respectively. How many tarts did Ian have at first?