894  Stamp
How many stamps? 1

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There are 270 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1630 cents. How many 7-cent stamps are there?



There are 270 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 2290 cents. How many 8-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 930 cents. How many 3-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1080 cents. How many 3-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 960 cents. How many 4-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1570 cents. How many 6-cent stamps are there?



There are 270 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1360 cents. How many 6-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1020 cents. How many 7-cent stamps are there?



There are 260 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1640 cents. How many 4-cent stamps are there?



There are 140 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 630 cents. How many 5-cent stamps are there?



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894    140 140 150 100 150 ( 680 )   110 140 110 140 70 ( 570 )   [[ 1250 ]]