#### Answer

Clinic A's standard quota is 5.49
Clinic B's standard quota is 7.83
Clinic C's standard quota is 12.21
Clinic D's standard quota is 14.47

#### Work Step by Step

We can find the total patient load.
total load = 275 + 392 + 611 + 724 = 2002
We can find the standard divisor.
$standard~divisor = \frac{total~load}{number~of~ doctors}$
$standard~divisor = \frac{2002}{40}$
$standard~divisor = 50.05$
The standard divisor is 50.05
We can find the standard quota for each clinic.
Clinic A:
$standard~quota = \frac{patient~load}{standard~divisor}$
$standard~quota = \frac{275}{50.05}$
$standard~quota = 5.49$
Clinic B:
$standard~quota = \frac{patient~load}{standard~divisor}$
$standard~quota = \frac{392}{50.05}$
$standard~quota = 7.83$
Clinic C:
$standard~quota = \frac{patient~load}{standard~divisor}$
$standard~quota = \frac{611}{50.05}$
$standard~quota = 12.21$
Clinic D:
$standard~quota = \frac{patient~load}{standard~divisor}$
$standard~quota = \frac{724}{50.05}$
$standard~quota = 14.47$