A and B run a 1.5-kilometer race. In the first heat, A gives B a start of 11 meters and beats him by 57 seconds. In the second heat, A gives B a start of 81 seconds and is beaten by 88 meters. Find the rate of A in km/hr.

Second Heat:

From Equations (1) and (2)
$\dfrac{1}{v_A} = \dfrac{35,109}{147,532}$

$v_A = 4.202 ~ \text{m/sec}$

$v_A = 4.202 ~ \dfrac{\text{m}}{\text{sec}} \times \dfrac{1 ~ \text{km}}{1000 ~ \text{m}} \times \dfrac{3600 ~ \text{sec}}{1 ~ \text{hr}}$

$v_A = 15.1 ~ \text{kph}$