989  Stamp
How many stamps? 2

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There are 230 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1920 cents. How many 8-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 4-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 890 cents. How many 4-cent stamps are there?



There are 150 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 810 cents. How many 7-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 830 cents. How many 4-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1450 cents. How many 8-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1620 cents. How many 5-cent stamps are there?



오늘 8원짜리 6원짜리 우표 총 200 장을 사고, 1500 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 230 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1160 cents. How many 4-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1220 cents. How many 4-cent stamps are there?



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989    150 150 100 70 70 ( 540 )   100 90 150 110 80 ( 530 )   [[ 1070 ]]