791  Stamp
How many stamps? 2

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There are 200 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 920 cents. How many 7-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1110 cents. How many 5-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1110 cents. How many 4-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1420 cents. How many 5-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 590 cents. How many 3-cent stamps are there?



오늘 5원짜리 8원짜리 우표 총 210 장을 사고, 1320 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 240 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1370 cents. How many 3-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1080 cents. How many 3-cent stamps are there?



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791    80 120 150 110 120 ( 580 )   130 80 120 110 120 ( 560 )   [[ 1140 ]]