826  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 190 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 830 cents. How many 5-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1280 cents. How many 8-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1450 cents. How many 7-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1740 cents. How many 8-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1240 cents. How many 7-cent stamps are there?



There are 130 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 960 cents. How many 7-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1040 cents. How many 4-cent stamps are there?



오늘 4원짜리 7원짜리 우표 총 130 장을 사고, 700 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 220 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 800 cents. How many 4-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1680 cents. How many 5-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

826    130 100 130 120 120 ( 600 )   80 120 70 140 120 ( 530 )   [[ 1130 ]]