347  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 160 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 800 cents. How many 6-cent stamps are there?



There are 280 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1850 cents. How many 8-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1300 cents. How many 7-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1550 cents. How many 7-cent stamps are there?



There are 140 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 700 cents. How many 7-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1030 cents. How many 8-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1180 cents. How many 8-cent stamps are there?



오늘 5원짜리 3원짜리 우표 총 230 장을 사고, 990 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 260 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1670 cents. How many 6-cent stamps are there?



There are 140 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 910 cents. How many 6-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

347    80 150 70 110 70 ( 480 )   80 80 150 150 70 ( 530 )   [[ 1010 ]]