Question 387528
Let {{{m}}} = Mary's age now
Let {{{t}}} = Tina's age now
Three years ago, mary was {{{24 - 3 = 21}}}
Three years ago, Tina was {{{t - 3}}}
given:
{{{m = 24}}}
{{{t - 3 = 2*21}}}
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{{{t = 42 + 3}}}
{{{t = 45}}}
and
{{{t + 5 = 45 + 5}}}
{{{t + 5 = 50}}}
In five years, Tina will be 50 years old