338  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 170 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1090 cents. How many 8-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1310 cents. How many 7-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 960 cents. How many 5-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1290 cents. How many 7-cent stamps are there?



There are 140 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 800 cents. How many 7-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1350 cents. How many 8-cent stamps are there?



¿À´Ã 6¿øÂ¥¸® 3¿øÂ¥¸® ¿ìÇ¥ ÃÑ 190 ÀåÀ» »ç°í, 780 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 6¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?



There are 230 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1520 cents. How many 7-cent stamps are there?



There are 250 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1240 cents. How many 6-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

338    80 130 80 70 80 ( 440 )   80 100 70 140 120 ( 510 )   [[ 950 ]]