586  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 210 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1030 cents. How many 3-cent stamps are there?



There are 260 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1560 cents. How many 3-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1510 cents. How many 7-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 790 cents. How many 3-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1100 cents. How many 6-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1110 cents. How many 5-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¥¸® 7¿øÂ¥¸® ¿ìÇ¥ ÃÑ 220 ÀåÀ» »ç°í, 1180 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 3¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?



There are 170 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1160 cents. How many 6-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1480 cents. How many 7-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

586    110 130 100 130 90 ( 560 )   150 150 90 100 100 ( 590 )   [[ 1150 ]]