495  Stamp
How many stamps? 2

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There are 230 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1090 cents. How many 7-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1710 cents. How many 8-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 840 cents. How many 4-cent stamps are there?



There are 280 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 2370 cents. How many 8-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1200 cents. How many 4-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1030 cents. How many 8-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 990 cents. How many 6-cent stamps are there?



오늘 8원짜리 3원짜리 우표 총 120 장을 사고, 710 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 220 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1340 cents. How many 5-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1230 cents. How many 5-cent stamps are there?



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495    100 100 110 150 80 ( 540 )   110 100 70 100 120 ( 500 )   [[ 1040 ]]