724  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 250 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1760 cents. How many 6-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1230 cents. How many 5-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1070 cents. How many 6-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1860 cents. How many 7-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1730 cents. How many 7-cent stamps are there?



There are 130 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 750 cents. How many 5-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1280 cents. How many 4-cent stamps are there?



¿À´Ã 8¿øÂ¥¸® 3¿øÂ¥¸® ¿ìÇ¥ ÃÑ 240 ÀåÀ» »ç°í, 1320 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 8¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?



There are 170 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1160 cents. How many 6-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 790 cents. How many 5-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

724    120 150 70 150 80 ( 570 )   80 120 120 100 70 ( 490 )   [[ 1060 ]]