626  Stamp
How many stamps? 2

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There are 200 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1330 cents. How many 8-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1360 cents. How many 5-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1310 cents. How many 5-cent stamps are there?



There are 150 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1150 cents. How many 7-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1330 cents. How many 8-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1500 cents. How many 7-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1300 cents. How many 5-cent stamps are there?



오늘 3원짜리 7원짜리 우표 총 210 장을 사고, 870 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 150 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 800 cents. How many 8-cent stamps are there?



There are 260 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 1060 cents. How many 5-cent stamps are there?



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626    110 90 100 100 140 ( 540 )   150 120 150 70 140 ( 630 )   [[ 1170 ]]