maths Maths Puzzle

Q. If 3x - 2y = 8, so what is 4y - 6x

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maths Other Question

Q. 12 men can do a job in 4 hours. in what time the same job can be done by 15 men Q. If an account amounts to 8640/- in 3 yrs compounded annually at 20% interest. find the actual amount deposited.