#### Answer

$59^{\circ}~F$

#### Work Step by Step

$F = \frac{9}{5}C+32$
We can use this formula to convert from Celsius to Fahrenheit. It is given in the question that $C = 15$ since the temperature on the Celsius scale is $15^{\circ}~C$.
$F = \frac{9}{5}C+32$
$F = \frac{9}{5}(15)+32$
$F = 27+32$
$F = 59$
The temperature on the Fahrenheit scale is $59^{\circ}~F$