167  Stamp
How many stamps? 2

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There are 240 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1830 cents. How many 8-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1340 cents. How many 8-cent stamps are there?



There are 140 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1100 cents. How many 7-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1120 cents. How many 5-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 750 cents. How many 3-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1180 cents. How many 4-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 570 cents. How many 3-cent stamps are there?



오늘 3원짜리 5원짜리 우표 총 230 장을 사고, 930 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 220 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1010 cents. How many 3-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1350 cents. How many 7-cent stamps are there?



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167    150 130 80 140 150 ( 650 )   70 110 110 150 100 ( 540 )   [[ 1190 ]]