693  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 170 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1140 cents. How many 7-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1790 cents. How many 7-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1650 cents. How many 8-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1500 cents. How many 4-cent stamps are there?



There are 280 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1700 cents. How many 7-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 880 cents. How many 3-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1030 cents. How many 5-cent stamps are there?



오늘 8원짜리 4원짜리 우표 총 200 장을 사고, 1080 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 180 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 940 cents. How many 3-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1560 cents. How many 8-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

693    120 140 150 150 150 ( 710 )   110 110 70 80 150 ( 520 )   [[ 1230 ]]