818  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 190 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1000 cents. How many 4-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 580 cents. How many 4-cent stamps are there?



There are 130 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 800 cents. How many 5-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1380 cents. How many 4-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1230 cents. How many 7-cent stamps are there?



There are 260 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1150 cents. How many 4-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1480 cents. How many 5-cent stamps are there?



오늘 7원짜리 6원짜리 우표 총 180 장을 사고, 1210 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 240 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 1000 cents. How many 5-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1090 cents. How many 4-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

818    130 70 80 120 120 ( 520 )   150 80 130 140 70 ( 570 )   [[ 1090 ]]