850  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 220 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1450 cents. How many 7-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 6-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 970 cents. How many 5-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1330 cents. How many 5-cent stamps are there?



There are 260 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1600 cents. How many 8-cent stamps are there?



There are 130 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 730 cents. How many 6-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1070 cents. How many 6-cent stamps are there?



오늘 5원짜리 3원짜리 우표 총 170 장을 사고, 650 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 240 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1050 cents. How many 6-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1440 cents. How many 7-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

850    130 70 130 140 140 ( 610 )   80 120 70 110 120 ( 500 )   [[ 1110 ]]