Consider a father pushing a child on a playground merry-go-round. The system has a moment of inertia of 84. 4 kg · m2. The father exerts a force on the merry-go-round perpendicular to its 1. 50 m radius to achieve a torque of 375 n · m.

Raul has one solution that is 20% acid by volume and one solution that is 50% acid by volume. he plans to mix together some of each solution to create 30 milliliters of a solution that is 40% acid by volume. how many milliliters of the 20% acid solution should raul use to create the 40% acid solution? can someone explain this to me? i know that the answer is 10 milliliters, but i don't know how to get it.