382  Stamp
How many stamps? 2

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There are 150 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 570 cents. How many 3-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1210 cents. How many 3-cent stamps are there?



There are 140 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 880 cents. How many 8-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1390 cents. How many 7-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 560 cents. How many 3-cent stamps are there?



There are 270 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1470 cents. How many 5-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1410 cents. How many 8-cent stamps are there?



오늘 7원짜리 3원짜리 우표 총 180 장을 사고, 860 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 170 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 950 cents. How many 6-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1310 cents. How many 7-cent stamps are there?



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382    90 110 80 120 120 ( 520 )   150 120 80 100 130 ( 580 )   [[ 1100 ]]