142  Stamp
How many stamps? 2

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There are 260 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1480 cents. How many 4-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 710 cents. How many 4-cent stamps are there?



There are 260 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1110 cents. How many 3-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1310 cents. How many 8-cent stamps are there?



There are 240 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1090 cents. How many 7-cent stamps are there?



오늘 5원짜리 4원짜리 우표 총 250 장을 사고, 1130 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 120 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 580 cents. How many 4-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1860 cents. How many 7-cent stamps are there?



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142    150 90 150 140 120 ( 650 )   120 70 130 70 150 ( 540 )   [[ 1190 ]]