893  Stamp
How many stamps? 2

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There are 180 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1180 cents. How many 6-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1070 cents. How many 7-cent stamps are there?



There are 150 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1130 cents. How many 8-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1450 cents. How many 7-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1800 cents. How many 7-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1530 cents. How many 6-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1240 cents. How many 7-cent stamps are there?



오늘 3원짜리 6원짜리 우표 총 160 장을 사고, 630 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 140 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1020 cents. How many 6-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1340 cents. How many 6-cent stamps are there?



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893    80 90 80 150 90 ( 490 )   90 120 110 80 140 ( 540 )   [[ 1030 ]]