Question 1185802
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The sum of the ages of Nate and Bob <s>are</s> is 25 years <s>old together</s>. <s>5</s> Five years ago, Nate was 4 times older than Bob. 
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b, Bob's age today
25-b, Nate's age today



The description means literally
{{{(25-b)-5=(b-5)+4(b-5)}}}


{{{20-b=b-5+4b-20}}}
{{{20+20+5=b+5b}}}
{{{45=6b}}}
{{{15=2b}}}
{{{b=15/2}}}
{{{b=7&1/2}}}----------Bob's age now