869  Stamp
How many stamps? 2

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There are 180 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 790 cents. How many 3-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 990 cents. How many 6-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1310 cents. How many 5-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 760 cents. How many 3-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1200 cents. How many 7-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1530 cents. How many 5-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1370 cents. How many 8-cent stamps are there?



오늘 7원짜리 5원짜리 우표 총 270 장을 사고, 1630 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 130 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 830 cents. How many 5-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1280 cents. How many 8-cent stamps are there?



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869    130 120 80 120 120 ( 570 )   130 90 140 70 130 ( 560 )   [[ 1130 ]]