600  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 170 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1080 cents. How many 6-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 890 cents. How many 5-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1540 cents. How many 6-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 980 cents. How many 4-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1240 cents. How many 8-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1350 cents. How many 5-cent stamps are there?



오늘 7원짜리 3원짜리 우표 총 180 장을 사고, 1060 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 240 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 870 cents. How many 4-cent stamps are there?



There are 150 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 870 cents. How many 7-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

600    110 130 140 70 140 ( 590 )   120 150 130 150 90 ( 640 )   [[ 1230 ]]