210  Stamp
How many stamps? 2

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There are 180 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 610 cents. How many 4-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1380 cents. How many 7-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1140 cents. How many 6-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1600 cents. How many 8-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 650 cents. How many 4-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1060 cents. How many 5-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1490 cents. How many 8-cent stamps are there?



오늘 6원짜리 4원짜리 우표 총 170 장을 사고, 820 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



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



There are 240 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1380 cents. How many 5-cent stamps are there?



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210    70 140 100 150 80 ( 540 )   100 90 70 120 150 ( 530 )   [[ 1070 ]]