185  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 160 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 960 cents. How many 3-cent stamps are there?



There are 270 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1800 cents. How many 8-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1030 cents. How many 4-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1140 cents. How many 3-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1270 cents. How many 7-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1470 cents. How many 6-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1570 cents. How many 7-cent stamps are there?



오늘 3원짜리 7원짜리 우표 총 180 장을 사고, 780 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 170 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 610 cents. How many 4-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 1010 cents. How many 3-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

185    80 150 100 110 70 ( 510 )   110 70 120 100 120 ( 520 )   [[ 1030 ]]