If there is a 70% chance of rain tomorrow and a 50% chance of wind and rain, what is the probability that it is windy, given that it is rainy? Round your answer to the nearest percent.
A. 67%
B. 71%
C. 78%
D. 33%
I got 71%, can anyone check if i'm right for me?

Question

If there is a 70% chance of rain tomorrow and a 50% chance of wind and rain, what is the probability that it is windy, given that it is rainy? Round your answer to the nearest percent.
  		A. 	67%
  		B. 	71%
  		C. 	78%
  		D. 	33%
I got 71%, can anyone check if i'm right for me?

amistre64 · Answer

how did you get the results?

amistre64 · Answer

in other words, what is preventing you from just guessing to see if someone gives you a better answer ...

anonymous · Answer

I made 50% and 70% into a decimal which is .50 and .70 then from there i divided .50 by .70 and got a decimal which i converted into a percentage.

amistre64 · Answer

your process is good

formula-wise:$$P(A|B)=\frac{P(AnB)}{P(B)}$$
50/70,  or 5/7  is about 71%

anonymous · Answer

Alright thanks, the main reason for posting this was just to see if im right but if wrong i was going to ask on how they came to their answer.