Question
Ken placed a number of paper clips measuring 7 cm each on a straight line leaving a gap of 3 cm between each paper clip. The distance between the tip of first paper clip and the end of the last paper clip was 57 cm. How many paper clips did Ken place on the straight line?
4 m

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Ken placed a number of paper clips measuring 7 cm each on a straight line leaving a gap of 3 cm between each paper clip. The distance between the tip of first paper clip and the end of the last paper clip was 57 cm. How many paper clips did Ken place on the straight line?