What is the terminal velocity of cuttings if they are in a Newtonian mud with density $11$ ppg and viscosity $15cp.$ The cuttings are spherical and have a density of $2\mathrm{.}6\frac{g}{c}c.$ with a diameter of $1cm.$

For the cuttings above if the mud velocity is $30\%$ higher than the terminal velocity, what will the cuttings concentration in the mud be$?$