Question
David used 89 sticks to make a total of 17 pentagons and heptagons. A pentagon was made using 5 sticks and a heptagon was made using 7 sticks. How many heptagons were there?
4 m

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David used 89 sticks to make a total of 17 pentagons and heptagons. A pentagon was made using 5 sticks and a heptagon was made using 7 sticks. How many heptagons were there?