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There are 210 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1230 cents. How many 3-cent stamps are there?
There are 250 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1300 cents. How many 3-cent stamps are there?
There are 140 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 690 cents. How many 6-cent stamps are there?
There are 220 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 780 cents. How many 4-cent stamps are there?
There are 210 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 760 cents. How many 4-cent stamps are there?
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There are 150 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 850 cents. How many 3-cent stamps are there?
There are 210 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 5-cent stamps are there?
¿À´Ã 7¿øÂ¥¸® 3¿øÂ¥¸® ¿ìÇ¥ ÃÑ 240 ÀåÀ» »ç°í, 1280 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 7¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?
There are 210 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1360 cents. How many 6-cent stamps are there?
There are 260 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1450 cents. How many 6-cent stamps are there?
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