299  Stamp
How many stamps? 2

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There are 170 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1010 cents. How many 8-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 860 cents. How many 6-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1330 cents. How many 7-cent stamps are there?



There are 130 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 830 cents. How many 5-cent stamps are there?



There are 270 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1750 cents. How many 6-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1290 cents. How many 7-cent stamps are there?



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There are 150 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 830 cents. How many 5-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1270 cents. How many 7-cent stamps are there?



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299    80 70 110 150 70 ( 480 )   140 120 100 70 70 ( 500 )   [[ 980 ]]