918  Stamp
How many stamps? 2

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There are 220 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 980 cents. How many 3-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1090 cents. How many 4-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 970 cents. How many 6-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1470 cents. How many 3-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1130 cents. How many 3-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1120 cents. How many 8-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1320 cents. How many 6-cent stamps are there?



오늘 6원짜리 4원짜리 우표 총 230 장을 사고, 1120 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 180 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 680 cents. How many 5-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 940 cents. How many 8-cent stamps are there?



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918    140 80 70 130 110 ( 530 )   110 80 100 70 80 ( 440 )   [[ 970 ]]