exam Maths Puzzle Numerical Ability

A water tower that stands 70 ft high holds 500,000 gallons of water. A similar tower is 95 ft high. How much water will it hold?

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Details: When using the quadratic formula to solve a quadratic equation ax2 + bx + c = 0, the discriminant is b2 - 4ac. This discriminant can
A rancher wants to fence a rectengular area next to a river, using 150 yards of fencing.

a) determine a formula in one variable for the area A(x)

b) at what value of x will t