458  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 180 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1260 cents. How many 6-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 2010 cents. How many 7-cent stamps are there?



There are 280 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1830 cents. How many 7-cent stamps are there?



There are 260 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1690 cents. How many 4-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1670 cents. How many 8-cent stamps are there?



There are 140 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 470 cents. How many 3-cent stamps are there?



There are 240 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 900 cents. How many 3-cent stamps are there?



¿À´Ã 3¿øÂ¥¸® 4¿øÂ¥¸® ¿ìÇ¥ ÃÑ 190 ÀåÀ» »ç°í, 620 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 3¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?



There are 250 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1610 cents. How many 8-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 4-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

458    90 120 150 130 130 ( 620 )   90 150 140 120 150 ( 650 )   [[ 1270 ]]