
Start by writing a formula, where
is Brad's purchase price and
is the original price.

Subtract
from both sides.

Multiply both sides by
.

The 30th term of this sequence would be 248
Answer:
52.5% probability that A occurs given B occurs
Step-by-step explanation:
Suppose we have two events, A and B, the conditional probability formula is:

In which
P(A|B) is the probability of A happening given that B happened.
is the probability of both A and B happening.
P(B) is the probability of B happening.
In this problem, we have that:

So

52.5% probability that A occurs given B occurs
It says decreasing so you have to turn it into a percent (.06%) and then sub tract that from 1. After that you put that into an equation.
A watch decreased in price by
4
5
. After the reduction it was priced at £10. What was the original price of the watch?