Joanne earns $720 a week. she spends 1/3 of her money on rent and 3/4 of the remaining money on groceries. how much money does she spend on both rent and groceries.

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?