932  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 250 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1420 cents. How many 7-cent stamps are there?



There are 140 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1020 cents. How many 6-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1640 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 160 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 560 cents. How many 3-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1150 cents. How many 4-cent stamps are there?



There are 260 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1410 cents. How many 5-cent stamps are there?



오늘 3원짜리 5원짜리 우표 총 180 장을 사고, 700 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 240 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 860 cents. How many 4-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1040 cents. How many 7-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

932    140 80 140 80 80 ( 520 )   130 150 100 140 120 ( 640 )   [[ 1160 ]]