179  Stamp
How many stamps? 2

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There are 180 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 650 cents. How many 3-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 950 cents. How many 3-cent stamps are there?



There are 260 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1180 cents. How many 5-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1260 cents. How many 8-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1460 cents. How many 4-cent stamps are there?



There are 240 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 810 cents. How many 3-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1450 cents. How many 4-cent stamps are there?



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There are 190 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1150 cents. How many 7-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1150 cents. How many 3-cent stamps are there?



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179    70 130 140 90 140 ( 570 )   150 70 150 130 150 ( 650 )   [[ 1220 ]]