Benjamin has a 0.7 chance of passing his driving test the first time and a 0.85 chance of passing the second time. What is the probability of his passing on either the first or second try?

The probability of passing at either the first or second time round is P(passing first time) + P(taking the test for a second time then passing)
= 0.7 + (0.85 x 0.3)= 0.7 + 0.255= 0.955
Clarification: you must multiply the probability of Ben passing the second time by the probability that he failed the test the first time round. Then you can add this to the probability that he passes the first time.

RF
Answered by Rob F. Maths tutor

3918 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How to make something the subject of the formula?


Solve (x/4)-(2x/x+2)=1. Give your solutions to 2 decimal places.


Shape S is one quarter of a solid sphere. The volume of S is 576(pi)cm(^3). Find the surface area of S correct to 3 significant figures


Calculate the length of the hypotenuse of a right-angled triangle when the other two sides measure 6cm and 9cm.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning