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There are 270 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1260 cents. How many 6-cent stamps are there?
There are 210 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 6-cent stamps are there?
There are 250 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1400 cents. How many 8-cent stamps are there?
There are 170 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1290 cents. How many 6-cent stamps are there?
There are 240 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1590 cents. How many 8-cent stamps are there?
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There are 220 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1140 cents. How many 6-cent stamps are there?
There are 200 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1500 cents. How many 7-cent stamps are there?
¿À´Ã 6¿øÂ¥¸® 9¿øÂ¥¸® ¿ìÇ¥ ÃÑ 200 ÀåÀ» »ç°í, 1500 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 6¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?
There are 260 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 2060 cents. How many 7-cent stamps are there?
There are 190 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 970 cents. How many 4-cent stamps are there?
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