Multiple Choice Question: This law states that the strength of a concrete is inversely proportional to its water-to-cement ratio.

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Orphaned Multiple Choice Questions (MCQ) due to changes of exam system.

A can do a job 50% faster than B and 20% faster than C. Working altogether, they can finish the job in 4 days. How many days will it take A to finish the job if he works alone?
According to Hooke’s law, the force F required to stretched a spring of x units is directly proportional to the length x.
If 1200 cm^2 of material is available to make a box with a square base and open top, find the largest possible volume of the box.
The total surface area of a regular tetrahedron is 339.482 cm2. Find the measure of the edge of this tetrahedron.
A mass of liquid translated horizontally to the left with a uniform velocity will have its surface:
At an ordinary rate a man can row the distance from Pasig to Manila, about 15km, in 5 hours less time than it takes him to return.
3^n - 3^{n - 1} - 3^{n - 2} is equal to:
Company A has a fixed expense of P1.5M monthly and each unit is produced at P20.
w varies jointly with x and y and inversely with the square of z. If w = 12 when x = 3, y = 8, and z = 2, find the constant of proportionality k.
Today, I am one more than eleven times as old as my son. 9 years from now, I will be seven more than three times as old as him. How old is my son?
Find k so that x + 6 is a factor of x^4 + 4x^3 - 21x^2 + kx + 108.
The probabilities that three men hit a target are 1/6, 1/4, and 1/3, respectively. Each shoot once at the target.
If it were two hours later, it would be half as long until midnight as it would be if it were an hour later. What time is it now?
Simplify and solve for y: $y = \ln \left( \dfrac{e^x}{e^{x - 1}} \right)$.
Simplify and solve for y: $y = \ln \left( \dfrac{e^x}{e^{x - 1}} \right)$.