318  Stamp
How many stamps? 2

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There are 190 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1230 cents. How many 3-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 630 cents. How many 3-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 780 cents. How many 4-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1070 cents. How many 4-cent stamps are there?



There are 260 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 1060 cents. How many 5-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1250 cents. How many 6-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1530 cents. How many 5-cent stamps are there?



오늘 6원짜리 4원짜리 우표 총 160 장을 사고, 860 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 170 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1180 cents. How many 8-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1450 cents. How many 8-cent stamps are there?



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318    80 110 120 110 140 ( 560 )   80 90 110 80 140 ( 500 )   [[ 1060 ]]