[tex]a. \: 1 \frac{1}{3} \times \frac{2}{5} = \frac{4}{3} \times \frac{2}{5} = \frac{8}{15} [/tex]
[tex]b. \: 5 \frac{1}{2} \times \frac{3}{4} = \frac{11}{2} \times \frac{3}{4} = \frac{33}{8} = 4 \frac{1}{8} [/tex]
[tex]c. \: \frac{3}{8} \times 6 \frac{3}{4} = \frac{3}{8} \times \frac{27}{4} = \frac{81}{32} = 2 \frac{17}{32} [/tex]
[tex]d. \: 2 \frac{2}{5} \times 5 \frac{1}{2} = \frac{12}{5} \times \frac{11}{2} = \frac{132}{10} = 13 \frac{2}{10} = 13 \frac{1}{5} [/tex]
[tex]e. \: 1 \frac{2}{3} \times 3 \frac{1}{8} = \frac{5}{3} \times \frac{25}{8} = \frac{125}{24} = 5 \frac{5}{24} [/tex]
[tex]f. \: 4 \frac{1}{6} \times 3 \frac{1}{4} = \frac{25}{6} \times \frac{13}{4} = \frac{325}{24} = 13 \frac{13}{24} [/tex]
