704  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 210 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1290 cents. How many 4-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1270 cents. How many 8-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1290 cents. How many 5-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1190 cents. How many 6-cent stamps are there?



There are 120 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 660 cents. How many 3-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1230 cents. How many 8-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1420 cents. How many 8-cent stamps are there?



¿À´Ã 7¿øÂ¥¸® 9¿øÂ¥¸® ¿ìÇ¥ ÃÑ 200 ÀåÀ» »ç°í, 1560 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 7¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?



There are 220 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1580 cents. How many 5-cent stamps are there?



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



+(         )

 

(         )+

++[[          ]]++

704    120 80 90 90 70 ( 450 )   120 140 120 100 70 ( 550 )   [[ 1000 ]]