395  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 210 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 720 cents. How many 4-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1340 cents. How many 7-cent stamps are there?



There are 260 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1320 cents. How many 6-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1000 cents. How many 5-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 920 cents. How many 4-cent stamps are there?



There are 150 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 520 cents. How many 4-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1260 cents. How many 5-cent stamps are there?



오늘 8원짜리 7원짜리 우표 총 200 장을 사고, 1490 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 120 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 670 cents. How many 6-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 960 cents. How many 7-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

395    90 140 140 120 130 ( 620 )   70 70 90 70 80 ( 380 )   [[ 1000 ]]