A collection of coins contains 13 pennies, 14 dimes, and 5 quarters. What is the percentage of pennies in the collection? Express your answer to two significant figures and include the appropriate units.

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d