4. A number is such that it is as much greater than 45 as it is less than 75. Find the numberâ€‹

Assume the number is x which is y greater than 45.

ATQ

45 + y = x ...(i)

75 - y = x ...(ii)

Equation (i) + Equation (ii)

45 + y + 75 - y = x + x

2x = 120

x = 60

Hence the required number is 60.

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