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In a circus there were a leopard and a tiger walking in the two different rings having same radii. It was observed that when leopard moved 3 steps, tiger moved 5 steps in the same time, but the distance traversed by leopard in 5 steps is equal to the distance traversed by tiger in 4 steps. How many rounds that a leopard made till when tiger completed 100 rounds?
Let the distance travelled by leopard in one step be $$x$$ units.
It is given, distance traversed by leopard in 5 steps is equal to the distance traversed by tiger in 4 steps
So, distance travelled by tiger in one step = $$\dfrac{5x}{4}$$ units.
Now, leopard moved 3 steps and tiger moved 5 steps in the same time.
So, in the same time, leopard is moving $$3\times\ x=3x$$ units.
And, distance travelled by the tiger = $$5\times\ \dfrac{5x}{4}=\dfrac{25x}{4}$$ units.
So, speed ratios of leopard and tiger
= $$\dfrac{3x}{\dfrac{25x}{4}}=\dfrac{12x}{25x}=\dfrac{12}{25}$$
So, number of rounds covered by leopard = $$\dfrac{12}{25}\times\ 100=48$$
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