250  Stamp
How many stamps? 2

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There are 170 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1460 cents. How many 8-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1540 cents. How many 8-cent stamps are there?



There are 260 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1110 cents. How many 3-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1020 cents. How many 7-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1050 cents. How many 3-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1450 cents. How many 7-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1050 cents. How many 3-cent stamps are there?



¿À´Ã 5¿øÂ¥¸® 9¿øÂ¥¸® ¿ìÇ¥ ÃÑ 260 ÀåÀ» »ç°í, 1780 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 5¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?



There are 210 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1410 cents. How many 3-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 840 cents. How many 6-cent stamps are there?



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250    70 140 150 100 150 ( 610 )   150 70 140 80 100 ( 540 )   [[ 1150 ]]