740  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 160 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1480 cents. How many 8-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1480 cents. How many 8-cent stamps are there?



There are 150 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 920 cents. How many 4-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1560 cents. How many 6-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1280 cents. How many 7-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1560 cents. How many 8-cent stamps are there?



¿À´Ã 6¿øÂ¥¸® 7¿øÂ¥¸® ¿ìÇ¥ ÃÑ 150 ÀåÀ» »ç°í, 950 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 6¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?



There are 160 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1160 cents. How many 5-cent stamps are there?



There are 120 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 670 cents. How many 6-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

740    110 150 110 70 80 ( 520 )   80 120 100 70 70 ( 440 )   [[ 960 ]]