Answer:
(A) $157.25
(B) $3,857.25
Step-by-step explanation:
The given values are:
Principle (P)
= $3700
Time (T)
= 6 months i.e., 1/2 years
Rate (R)
= 8.5%
(A)
As we know,
Simple Interest,
⇒
On putting the values, we get
⇒
⇒
⇒ ($) (he paid for the use of money)
(B)
Amount he paid to the bank will be:
⇒
⇒
⇒ ($)
Answer:
The guard should be positioned at the safe
Step-by-step explanation:
The night watchmen should be positioned to guard whichever place gives the highest expected value to the thief.
The expected value of robbing the safe is:
The expected value of robbing the cash register is:
Therefore, the guard should be positioned at the safe since it yields a higher expected value to the thief in case he tries to rob it.