6. Candice and her grandmother went to see the Langston Hughes House in Harlem. They 6 spent 10 of their total travel time on the subway. They spent 15 of their total travel time 100 on a bus. What fraction of their total travel time did Candice and her grandmother spend on the subway and the bus? A 21 100 B 75/100 C 21/10 D 13/10