Question 175813
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Paul's Age={{{x}}}
Henry's Age={{{4x-10}}}
Sum of both={{{100}}}
Putting into eqn:
{{{x+4x-10=100}}}, working eqn
{{{5x=100+10=110}}}
{{{cross(5)x/cross(5)=cross(110)22/cross(5)}}}
{{{highlight(x=22)}}}, Paul's Age
{{{4*22-10=88-10=highlight(78)}}} Henry's Age
In doubt? Go back working eqn:
{{{22+78=100}}}
{{{100=100}}}
Thank you,
Jojo</pre>