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Two trains are headed towaads each other...

Two trains are headed towaads each other on the same straight rrach, each vaving a speed of ` 30 km h^(-1)`. A bird that can fly at ` 60 km h^(-1)` flies off one train when they are ` 60 km` apart and leads firectly form the otjer train, On reaching the other train, tg flies back to the first train and so on.
(a) How many trips can the bird make from one trin to the other train befre they meet ? (b) What is the total distance the bird travels ?

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