496  Stamp
How many stamps? 2

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There are 180 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1040 cents. How many 8-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1440 cents. How many 8-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1190 cents. How many 7-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1400 cents. How many 8-cent stamps are there?



There are 270 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1770 cents. How many 8-cent stamps are there?



There are 260 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1820 cents. How many 5-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1580 cents. How many 8-cent stamps are there?



오늘 4원짜리 6원짜리 우표 총 230 장을 사고, 1140 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 160 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1100 cents. How many 8-cent stamps are there?



There are 150 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 630 cents. How many 5-cent stamps are there?



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496    100 120 90 130 140 ( 580 )   130 100 120 100 90 ( 540 )   [[ 1120 ]]