401  Stamp
How many stamps? 2

Name : _________________

 

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There are 160 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 910 cents. How many 7-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 760 cents. How many 3-cent stamps are there?



There are 150 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 950 cents. How many 4-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1800 cents. How many 8-cent stamps are there?



There are 130 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 740 cents. How many 8-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 720 cents. How many 3-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 830 cents. How many 3-cent stamps are there?



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There are 150 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 920 cents. How many 8-cent stamps are there?



There are 130 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 630 cents. How many 3-cent stamps are there?



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401    90 70 80 120 70 ( 430 )   80 90 130 80 70 ( 450 )   [[ 880 ]]