2. Economics
3. the demand for a good decay is according to the...

# Question: the demand for a good decay is according to the...

###### Question details

The demand for a good decay is, according to the differential equation:

$\frac{dQ}{dt}=-kQ$

where k is a constant and Q is the quantity at time t seconds. Given Q = 50 when t = 0 and that Q = 25 when = 10, find the time t at which Q = 10.