Jill applies a force of 250n to a machine. the machine applies a force of 25 n to an object . what is the mechanical advantage of the machine

Mechanical advantage is a measure of the force amplification achieved by using a tool,mechanical device or machine system.To calculate an object mechanical advantage, you divide the output force by the input force.  We do as follows:

Mechanical advantage = output force / input force = 25 N / 250 N = 0.1 

Pretty sure the answer is b : )