759  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 240 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1320 cents. How many 5-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 8-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1200 cents. How many 4-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1450 cents. How many 7-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1550 cents. How many 8-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1280 cents. How many 7-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1210 cents. How many 7-cent stamps are there?



¿À´Ã 4¿øÂ¥¸® 7¿øÂ¥¸® ¿ìÇ¥ ÃÑ 190 ÀåÀ» »ç°í, 1120 ¿øÀ» ÁöºÒ ÇßÀ»¶§, ¸î°³ÀÇ 4¿øÂ¥¸® ¿ìÇ¥¸¦ »ò´Â°¡?



There are 220 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 5-cent stamps and 8-cent stamps. Altogether they cost 1240 cents. How many 5-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

759    120 100 120 150 150 ( 640 )   80 70 70 90 120 ( 430 )   [[ 1070 ]]