270  Stamp
How many stamps? 2

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There are 170 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1160 cents. How many 8-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1350 cents. How many 6-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1320 cents. How many 8-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1190 cents. How many 3-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1200 cents. How many 4-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1740 cents. How many 6-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 930 cents. How many 6-cent stamps are there?



¿À´Ã 5¿øÂ¥¸® 3¿øÂ¥¸® ¿ìÇ¥ ÃÑ 170 ÀåÀ» »ç°í, 670 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 5¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?



There are 210 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1370 cents. How many 5-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 940 cents. How many 4-cent stamps are there?



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270    70 120 140 130 90 ( 550 )   140 110 80 130 110 ( 570 )   [[ 1120 ]]