Question 211458
c/b=16/100,,,,or  c=.16 b
.
c+b= 638
.
(.16b) +b = 638
.
1.16b = 638
.
b=550,,,,,,,,,,,,,,c=.16(550 = 88
.
.
check  88/550  =.16,,,,,,,ok
.
88+550 = 638 ,,,,,ok