Posted by Zoey on .
The area of a triangle varies jointly as its base and altitude. By what percent will the area change if the base is increased by 15% and the altitude decreased by 25%?

Math 
drwls,
(1.15)*(1.25) = 1.4375 is the change factor. Subtract 1 for the actal increase. Then convert that to %
There is a 43.75% increase