171  Stamp
How many stamps? 2

Name : _________________

 

refresh

There are 200 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 950 cents. How many 5-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1850 cents. How many 8-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1160 cents. How many 6-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1200 cents. How many 4-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1450 cents. How many 7-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1360 cents. How many 4-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1210 cents. How many 7-cent stamps are there?



오늘 5원짜리 4원짜리 우표 총 240 장을 사고, 1070 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 220 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1080 cents. How many 6-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1360 cents. How many 4-cent stamps are there?



+(         )

 

(         )+

++[[          ]]++

171    150 130 110 120 150 ( 660 )   140 110 110 140 100 ( 600 )   [[ 1260 ]]