727  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 220 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1140 cents. How many 7-cent stamps are there?



There are 280 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1440 cents. How many 7-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 910 cents. How many 5-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 650 cents. How many 4-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1620 cents. How many 8-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1220 cents. How many 4-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1030 cents. How many 7-cent stamps are there?



¿À´Ã 7¿øÂ¥¸® 8¿øÂ¥¸® ¿ìÇ¥ ÃÑ 150 ÀåÀ» »ç°í, 1130 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 7¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?



There are 260 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1480 cents. How many 8-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 830 cents. How many 4-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

727    120 150 110 80 140 ( 600 )   130 100 70 140 110 ( 550 )   [[ 1150 ]]