848  Stamp
How many stamps? 1

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There are 250 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1400 cents. How many 8-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1310 cents. How many 6-cent stamps are there?



There are 260 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1700 cents. How many 7-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1440 cents. How many 6-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1110 cents. How many 3-cent stamps are there?



There are 280 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1420 cents. How many 6-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 980 cents. How many 5-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 900 cents. How many 3-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 910 cents. How many 8-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1450 cents. How many 5-cent stamps are there?



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848    130 90 140 100 90 ( 550 )   150 130 120 80 150 ( 630 )   [[ 1180 ]]