General Maths Puzzle undefined

A HUNTER DOG IS FOLLOWING A RABBIT.
WHEN RABBIT JUMPS 8 STEPS TILL THEN DOG
JUMPS 6 STEPS.4 STEPS OF RABBIT IS EQUAL TO
6 STEPS OF DOG AND DOG IS 40 STES BEHIND THE RABBIT THEN FIND IN HOW MUCH STEPS DOG WILL CATCH THE RABBIT?

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General Other Question

in what ratio 30% methyl alcohol solution is mixed with 70% methyl alcohol solution so that the resultant solution has 60% solution in it? In 2013, the arithmetic mean of the annual incomes of Mukesh and Anil was Rs. 3800.
The arithmetic mean of the annual incomes of Anil and Ratan was Rs. 4800, and the arithmetic mean of the annual incomes of Ratan and Mukesh was Rs. 5800.
What is the arithmetic mean of the incomes of the three?