self Maths Puzzle

square of two digit number ending with 5

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self Other Question

If a person has two rectangular fields. The larger field has thrice the length and 4 times the width of the smaller field. If the smaller field has a length 50% more than the width.If a person takes 20 minutes to complete one round of a smaller field then what is the time required to complete one round of a larger field ? 1,3,5,7,x....