343  Stamp
How many stamps? 2

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There are 210 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 920 cents. How many 5-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 220 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1180 cents. How many 5-cent stamps are there?



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



There are 150 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1080 cents. How many 8-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1630 cents. How many 7-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 550 cents. How many 3-cent stamps are there?



오늘 7원짜리 8원짜리 우표 총 180 장을 사고, 1330 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 170 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 860 cents. How many 4-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 900 cents. How many 4-cent stamps are there?



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343    80 130 140 70 90 ( 510 )   130 100 110 110 150 ( 600 )   [[ 1110 ]]