649  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 200 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1020 cents. How many 6-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 520 cents. How many 3-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1500 cents. How many 7-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 820 cents. How many 3-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 970 cents. How many 3-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 640 cents. How many 4-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1510 cents. How many 5-cent stamps are there?



오늘 5원짜리 8원짜리 우표 총 240 장을 사고, 1590 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



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 190 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 770 cents. How many 5-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

649    110 80 100 140 90 ( 520 )   100 110 110 90 100 ( 510 )   [[ 1030 ]]