823  Stamp
How many stamps? 2

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There are 250 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1830 cents. How many 8-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1560 cents. How many 6-cent stamps are there?



There are 150 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 590 cents. How many 5-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1010 cents. How many 3-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1360 cents. How many 8-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



오늘 3원짜리 9원짜리 우표 총 200 장을 사고, 1260 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 160 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 840 cents. How many 4-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1200 cents. How many 5-cent stamps are there?



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823    130 150 120 70 70 ( 540 )   80 150 90 110 120 ( 550 )   [[ 1090 ]]