|
There are 140 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 770 cents. How many 5-cent stamps are there?
There are 240 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1020 cents. How many 3-cent stamps are there?
There are 220 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1830 cents. How many 8-cent stamps are there?
There are 210 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1790 cents. How many 8-cent stamps are there?
There are 150 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 950 cents. How many 5-cent stamps are there?
|
There are 230 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1390 cents. How many 5-cent stamps are there?
There are 190 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1210 cents. How many 6-cent stamps are there?
오늘 4원짜리 5원짜리 우표 총 200 장을 사고, 930 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?
There are 130 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 860 cents. How many 8-cent stamps are there?
There are 190 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1120 cents. How many 4-cent stamps are there?
|