575  Stamp
How many stamps? 2

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There are 200 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1270 cents. How many 5-cent stamps are there?



There are 130 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 960 cents. How many 7-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1110 cents. How many 6-cent stamps are there?



There are 140 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 760 cents. How many 4-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1140 cents. How many 8-cent stamps are there?



There are 150 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1150 cents. How many 8-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 920 cents. How many 6-cent stamps are there?



오늘 4원짜리 7원짜리 우표 총 170 장을 사고, 860 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 230 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1310 cents. How many 5-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 2120 cents. How many 8-cent stamps are there?



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575    110 80 140 90 90 ( 510 )   100 70 110 150 130 ( 560 )   [[ 1070 ]]