The speed of a train is 60 miles per hour. in 2 hours, the train will cover miles, in 4 hours, the train will cover miles. the train covered more miles in 4 hours than it did in 2 hours.

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).

With finding limits of multi variable !