Question
David was fixing a jigsaw puzzle. On the second day, the number of pieces he fixed was 50% of the total number of pieces. After another two weeks, he fixed another 170 pieces and was left with 30% of the jigsaw puzzle unfixed. How many pieces were left unfixed?
3 m

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David was fixing a jigsaw puzzle. On the second day, the number of pieces he fixed was 50% of the total number of pieces. After another two weeks, he fixed another 170 pieces and was left with 30% of the jigsaw puzzle unfixed. How many pieces were left unfixed?