326  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 170 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?



There are 240 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1500 cents. How many 3-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1230 cents. How many 6-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 700 cents. How many 5-cent stamps are there?



There are 140 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 630 cents. How many 6-cent stamps are there?



There are 260 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1860 cents. How many 8-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 770 cents. How many 4-cent stamps are there?



¿À´Ã 7¿øÂ¥¸® 4¿øÂ¥¸® ¿ìÇ¥ ÃÑ 230 ÀåÀ» »ç°í, 1250 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 7¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?



There are 190 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 7-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1520 cents. How many 5-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

326    80 110 70 110 70 ( 440 )   150 80 110 120 70 ( 530 )   [[ 970 ]]