424  Stamp
How many stamps? 2

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There are 220 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1270 cents. How many 4-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 880 cents. How many 4-cent stamps are there?



There are 130 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 930 cents. How many 6-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 900 cents. How many 5-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1260 cents. How many 5-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1150 cents. How many 4-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1310 cents. How many 5-cent stamps are there?



오늘 5원짜리 8원짜리 우표 총 140 장을 사고, 850 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 240 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1570 cents. How many 6-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1080 cents. How many 3-cent stamps are there?



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424    90 70 80 120 70 ( 430 )   130 130 90 110 120 ( 580 )   [[ 1010 ]]