258  Stamp
How many stamps? 2

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There are 170 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 910 cents. How many 3-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 980 cents. How many 4-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1450 cents. How many 5-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 650 cents. How many 3-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1470 cents. How many 5-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1760 cents. How many 8-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 810 cents. How many 3-cent stamps are there?



오늘 3원짜리 6원짜리 우표 총 200 장을 사고, 840 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 170 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 810 cents. How many 3-cent stamps are there?



There are 270 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 2290 cents. How many 8-cent stamps are there?



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258    70 140 150 100 150 ( 610 )   150 70 120 70 140 ( 550 )   [[ 1160 ]]