Referring to Problem 10.20, if the additional load has a power factor 0.866 leading, how many kVA may be added without exceeding the transformer rating?

Data from Problem 10.20

A transformer rated at a maximum of 25 kVA supplies a 12-kW load at power factor 0.60 lagging. What percent of the transformer rating does this load represent? How many kW in additional load may be added at unity power factor before the transformer exceeds its rated kVA?