385  Stamp
How many stamps? 2

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There are 200 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1130 cents. How many 4-cent stamps are there?



There are 130 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 770 cents. How many 5-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1380 cents. How many 4-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1090 cents. How many 5-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1160 cents. How many 3-cent stamps are there?



There are 150 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 960 cents. How many 5-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1530 cents. How many 7-cent stamps are there?



오늘 8원짜리 3원짜리 우표 총 240 장을 사고, 1370 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 120 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 680 cents. How many 4-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 760 cents. How many 5-cent stamps are there?



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385    90 70 120 120 120 ( 520 )   80 90 130 70 80 ( 450 )   [[ 970 ]]