673  Stamp
How many stamps? 1

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There are 230 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1730 cents. How many 7-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1240 cents. How many 3-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 820 cents. How many 4-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1720 cents. How many 8-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1400 cents. How many 5-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 680 cents. How many 4-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1120 cents. How many 4-cent stamps are there?



There are 270 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1220 cents. How many 5-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1390 cents. How many 7-cent stamps are there?



There are 270 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1370 cents. How many 7-cent stamps are there?



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673    110 120 130 80 100 ( 540 )   110 140 140 130 140 ( 660 )   [[ 1200 ]]