Lisa is standing on a dock beside a lake. She drops a rock from her hand into the lake. After the rock hits the surface of the l
ake, the rock's distance from the lake's surface changes at a rate of −2 inches per second. If Lisa holds her hand 4 feet above the lake's surface, how far from Lisa's hand is the rock 5 seconds after it hits the surface?
58 inches. 4 feet is equal to 48 inches and if the rock is sinking at -2 feet an second for 5 seconds, then that is -10 inches and the absolute value of -10 is 10 so 10+48=58
By using the concept and properties of percentages, we conclude that the hospital has a total of 300 beds.
<h3>How many beds are available in a hospital?</h3>
In accordance with the statement, there are 210 patients in the beds of a hospital and 30 % of the beds are available. We must take advantage of the concept of percentage to calculate the total number of beds. 210 patients occupy 70 % of the beds.
Then, the total number of beds at the hospital is determined by dividing the number of beds with patients and its respective percentage: