Question
PSLE
Oliver had tarts and Carl had muffins. Both gave half of what they had to each other. Oliver sold 10 tarts and Carl sold 36 muffins. In the end, the ratios of tarts to muffins for Oliver and Carl were 1 : 6 and 1 : 4 respectively. How many tarts did Oliver have at first?
4 m

Click button first when a symbol is required. X

PSLE
Oliver had tarts and Carl had muffins. Both gave half of what they had to each other. Oliver sold 10 tarts and Carl sold 36 muffins. In the end, the ratios of tarts to muffins for Oliver and Carl were 1 : 6 and 1 : 4 respectively. How many tarts did Oliver have at first?