610  Stamp
How many stamps? 2

Name : _________________

refresh

There are 170 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1300 cents. How many 8-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1340 cents. How many 8-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1360 cents. How many 8-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1440 cents. How many 4-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1470 cents. How many 8-cent stamps are there?

There are 260 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1750 cents. How many 8-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1370 cents. How many 7-cent stamps are there?



오늘 7원짜리 9원짜리 우표 총 210 장을 사고, 1590 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 240 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1600 cents. How many 5-cent stamps are there?



There are 150 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 650 cents. How many 4-cent stamps are there?

+(         )

(         )+

++[[          ]]++