547  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 220 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1650 cents. How many 8-cent stamps are there?



There are 150 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 720 cents. How many 6-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1680 cents. How many 6-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1230 cents. How many 5-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1130 cents. How many 4-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 920 cents. How many 5-cent stamps are there?



There are 270 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1590 cents. How many 5-cent stamps are there?



오늘 4원짜리 3원짜리 우표 총 160 장을 사고, 580 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 170 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 890 cents. How many 5-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

547    110 90 130 90 90 ( 510 )   100 150 100 80 100 ( 530 )   [[ 1040 ]]