In five years, Rehana will be three times as old as Phoebe. If Rehana is currently 25 years old, and Jacob, Rehana's brother, is 3/5 of Phoebe's current age, how old is Jacob now?
If Rehana is currently 25 years old, she will be 25+5=
<gadget id="calculator">25+5</gadget>
<output>30</output>
30 in five years.
Rehana will be three times as old as Phoebe in five years, meaning Phoebe will be 30/3=10 years old in five years.
Currently, Phoebe is 10-5=
<gadget id="calculator">10-5</gadget>
<output>5</output>
5 years old.
3/5 of Phoebe's age now is 3/5*5=
<gadget id="calculator">3/5*5</gadget>
<output>3</output>
3 years, which is Jacob's age.

<result>3</result>