P5 Whole numbers

Sandra had twice as many apples as oranges at first. She removed 4 apples and 3 oranges each time. In the end, there were 18 apples and 1 orange left. How many fruits did Sandra have at first?

My solution:

https://docs.google.com/document/pub?id=1EaD59T5uGgvxYgr-aFAMM6oqmF12fmQoBdd8Z4H_-20

P6 Non-routine / heuristics

P5/P6 fraction/ratio

P6 fraction, mutual transfer

P5 Fraction, (2 variable prob)

J had 933 chairs n tables at first. After he sold 2/5 of the tables n 5/8 of the chairs, he had 459 tables n chairs left. How many tables did he sell?
(ans: 194?)