208  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 260 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 2080 cents. How many 7-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1200 cents. How many 6-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1380 cents. How many 5-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1180 cents. How many 4-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1260 cents. How many 8-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1050 cents. How many 5-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1310 cents. How many 4-cent stamps are there?



¿À´Ã 7¿øÂ¥¸® 4¿øÂ¥¸® ¿ìÇ¥ ÃÑ 200 ÀåÀ» »ç°í, 1040 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 7¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?



There are 230 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1740 cents. How many 7-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1240 cents. How many 7-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

208    130 150 120 130 70 ( 600 )   130 100 80 100 100 ( 510 )   [[ 1110 ]]