#28 Grade C 
revise! 

try a random GCSE question...  

Bobby
has purchased some model cars off the internet. When they are delivered he finds a number of them are faulty.


a) A car is chosen at random. What is the probability it is faulty? Give your answer as a fraction in its lowest terms. 

b) Estimate how many cars would be faulty if Bobby purchased 350 model cars. 

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