In order to calculate total utility (TU) from given levels of marginal utility (MU), one has to?

To calculate total utility (TU) from given levels of marginal utility (MU), one has to add MU from the various levels. Marginal utility (MU) is the additional utility a consumer derives from consuming an extra unit of a good. Total utility (TU) is the sum of the marginal utilities of all the units of a good consumed. Therefore, to calculate TU from given levels of MU, we add the MU from each unit of the good consumed until we reach the total number of units consumed. This will give us the total utility derived from consuming all the units.