676  Stamp
How many stamps? 2

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There are 180 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1200 cents. How many 7-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1210 cents. How many 7-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1180 cents. How many 6-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1050 cents. How many 3-cent stamps are there?



There are 140 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1000 cents. How many 8-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1620 cents. How many 8-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1230 cents. How many 3-cent stamps are there?



오늘 7원짜리 8원짜리 우표 총 240 장을 사고, 1800 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 230 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1160 cents. How many 4-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1730 cents. How many 7-cent stamps are there?



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676    120 80 130 90 80 ( 500 )   120 140 120 110 80 ( 570 )   [[ 1070 ]]