606  Stamp
How many stamps? 2

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There are 230 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1040 cents. How many 4-cent stamps are there?



There are 130 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 750 cents. How many 3-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1630 cents. How many 7-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1040 cents. How many 5-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 730 cents. How many 3-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?



There are 230 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1180 cents. How many 6-cent stamps are there?



오늘 8원짜리 3원짜리 우표 총 250 장을 사고, 1500 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 170 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1120 cents. How many 7-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 960 cents. How many 3-cent stamps are there?



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606    110 70 130 100 70 ( 480 )   150 130 150 100 80 ( 610 )   [[ 1090 ]]