601  Stamp
How many stamps? 2

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There are 180 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1040 cents. How many 5-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1210 cents. How many 7-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1210 cents. How many 5-cent stamps are there?



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 8-cent stamps. Altogether they cost 960 cents. How many 3-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1540 cents. How many 5-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1220 cents. How many 6-cent stamps are there?



오늘 5원짜리 3원짜리 우표 총 180 장을 사고, 740 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 200 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1120 cents. How many 7-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1580 cents. How many 8-cent stamps are there?



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601    110 70 130 80 80 ( 470 )   100 130 100 130 100 ( 560 )   [[ 1030 ]]