596  Stamp
How many stamps? 2

Name : _________________

refresh

There are 220 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1100 cents. How many 7-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 770 cents. How many 4-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1800 cents. How many 7-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1120 cents. How many 4-cent stamps are there?



There are 270 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1480 cents. How many 5-cent stamps are there?

There are 160 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 880 cents. How many 4-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1550 cents. How many 5-cent stamps are there?



오늘 4원짜리 9원짜리 우표 총 150 장을 사고, 850 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 160 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 730 cents. How many 5-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1110 cents. How many 4-cent stamps are there?

+(         )

(         )+

++[[          ]]++