pls help me with this statistics question asap pls.

The probability that an automobile being lled with gasoline also needs an oil change is 0.25; the probability that it needs a new oil lter is i145; and the probability that both the oil and the lter need changing is I114. {a} If the oil has to be changed, what is the probability that a new oil lter is needed? {b} If a new oil lter is needed, what is the probability that the oil has to be changed? {a} The probability that a new oil lter is needed is El. [Round to three decimal places as needed.) {b} The probability that the oil needs to be changed is D. {Round to three decimal places as needed.)