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There are 250 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1650 cents. How many 5-cent stamps are there?
There are 220 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1620 cents. How many 6-cent stamps are there?
There are 170 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1130 cents. How many 7-cent stamps are there?
There are 190 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 900 cents. How many 6-cent stamps are there?
There are 190 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1040 cents. How many 4-cent stamps are there?
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There are 240 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1310 cents. How many 5-cent stamps are there?
There are 190 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1400 cents. How many 7-cent stamps are there?
¿À´Ã 5¿øÂ¥¸® 9¿øÂ¥¸® ¿ìÇ¥ ÃÑ 220 ÀåÀ» »ç°í, 1500 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 5¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?
There are 280 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1810 cents. How many 6-cent stamps are there?
There are 160 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1140 cents. How many 6-cent stamps are there?
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