714  Stamp
How many stamps? 2

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There are 230 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1740 cents. How many 7-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1320 cents. How many 7-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1090 cents. How many 7-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1450 cents. How many 7-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1280 cents. How many 7-cent stamps are there?



There are 140 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 700 cents. How many 3-cent stamps are there?



There are 150 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1060 cents. How many 8-cent stamps are there?



오늘 6원짜리 4원짜리 우표 총 240 장을 사고, 1220 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 200 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1040 cents. How many 4-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1480 cents. How many 4-cent stamps are there?



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714    100 120 70 130 140 ( 560 )   70 80 130 80 110 ( 470 )   [[ 1030 ]]