Two train companies, Raily Reliable and Too Good to be Rail, run both passenger

Question

Two train companies, Raily Reliable and Too Good to be Rail, run both passenger and freight services. Each claims to be the one that is more likely to be on time than the other. For its part, Raily Reliable claims to have been on time 100 out of its last 120 trips, whereas Too Good to be Rail was on time for only 94 of its last 120 trips. On the other hand, Too Good to be Rail suggests that it was on time with 95% of its freight deliveries (compared to 90% for Rally Reliable) and with 75% of its passenger trips (compared to 50% for Railay Reliable). Explain how both companies can make their respective claims and each of them be telling the truth. Hint: Try to figure out how many trips of each type the companies made

Explanation / Answer

Raily reliable 100 20 120 on time 90 10 100 Too good to be Rail 20 100 120 on time 19 75 94

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