One hundred stamps

A hundred letter stamps cost a hundred crowns. Its costs are four levels - twenty-tenths, one crown, two-crown, and five-crown. How many are each type of stamp? How many does the problem have solutions?

Correct answer:

n =  66

Step-by-step explanation:

x1= 0.2*10 +1*85+2*4+5*1 = 100
x2= 0.2*15 +1*76+2*8+5*1 = 100
x3= 0.2*15 +1*79+2*4+5*2 = 100
x4= 0.2*20 +1*67+2*12+5*1 = 100
x5= 0.2*20 +1*70+2*8+5*2 = 100
x6= 0.2*20 +1*73+2*4+5*3 = 100
x7= 0.2*25 +1*58+2*16+5*1 = 100
x8= 0.2*25 +1*61+2*12+5*2 = 100
x9= 0.2*25 +1*64+2*8+5*3 = 100
x10= 0.2*25 +1*67+2*4+5*4 = 100
x11= 0.2*30 +1*49+2*20+5*1 = 100
x12= 0.2*30 +1*52+2*16+5*2 = 100
x13= 0.2*30 +1*55+2*12+5*3 = 100
x14= 0.2*30 +1*58+2*8+5*4 = 100
x15= 0.2*30 +1*61+2*4+5*5 = 100
x16= 0.2*35 +1*40+2*24+5*1 = 100
x17= 0.2*35 +1*43+2*20+5*2 = 100
x18= 0.2*35 +1*46+2*16+5*3 = 100
x19= 0.2*35 +1*49+2*12+5*4 = 100
x20= 0.2*35 +1*52+2*8+5*5 = 100
x21= 0.2*35 +1*55+2*4+5*6 = 100
x22= 0.2*40 +1*34+2*24+5*2 = 100
x23= 0.2*40 +1*37+2*20+5*3 = 100
x24= 0.2*40 +1*40+2*16+5*4 = 100
x25= 0.2*40 +1*43+2*12+5*5 = 100
x26= 0.2*40 +1*46+2*8+5*6 = 100
x27= 0.2*40 +1*49+2*4+5*7 = 100
x28= 0.2*45 +1*28+2*24+5*3 = 100
x29= 0.2*45 +1*31+2*20+5*4 = 100
x30= 0.2*45 +1*34+2*16+5*5 = 100
x31= 0.2*45 +1*37+2*12+5*6 = 100
x32= 0.2*45 +1*40+2*8+5*7 = 100
x33= 0.2*45 +1*43+2*4+5*8 = 100
x34= 0.2*50 +1*22+2*24+5*4 = 100
x35= 0.2*50 +1*25+2*20+5*5 = 100
x36= 0.2*50 +1*28+2*16+5*6 = 100
x37= 0.2*50 +1*31+2*12+5*7 = 100
x38= 0.2*50 +1*34+2*8+5*8 = 100
x39= 0.2*50 +1*37+2*4+5*9 = 100
x40= 0.2*55 +1*16+2*24+5*5 = 100
x41= 0.2*55 +1*19+2*20+5*6 = 100
x42= 0.2*55 +1*22+2*16+5*7 = 100
x43= 0.2*55 +1*25+2*12+5*8 = 100
x44= 0.2*55 +1*28+2*8+5*9 = 100
x45= 0.2*55 +1*31+2*4+5*10 = 100
x46= 0.2*60 +1*10+2*24+5*6 = 100
x47= 0.2*60 +1*13+2*20+5*7 = 100
x48= 0.2*60 +1*16+2*16+5*8 = 100
x49= 0.2*60 +1*19+2*12+5*9 = 100
x50= 0.2*60 +1*22+2*8+5*10 = 100
x51= 0.2*60 +1*25+2*4+5*11 = 100
x52= 0.2*65 +1*4+2*24+5*7 = 100
x53= 0.2*65 +1*7+2*20+5*8 = 100
x54= 0.2*65 +1*10+2*16+5*9 = 100
x55= 0.2*65 +1*13+2*12+5*10 = 100
x56= 0.2*65 +1*16+2*8+5*11 = 100
x57= 0.2*65 +1*19+2*4+5*12 = 100
x58= 0.2*70 +1*1+2*20+5*9 = 100
x59= 0.2*70 +1*4+2*16+5*10 = 100
x60= 0.2*70 +1*7+2*12+5*11 = 100
x61= 0.2*70 +1*10+2*8+5*12 = 100
x62= 0.2*70 +1*13+2*4+5*13 = 100
x63= 0.2*75 +1*1+2*12+5*12 = 100
x64= 0.2*75 +1*4+2*8+5*13 = 100
x65= 0.2*75 +1*7+2*4+5*14 = 100
x66= 0.2*80 +1*1+2*4+5*15 = 100


Try another example


Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Do you solve Diofant problems and are looking for a calculator of Diofant integer equations?

You need to know the following knowledge to solve this word math problem:

algebrabasic operations and conceptsnumbers

Related math problems and questions: