Math
posted by Nena on .
Solve the following: 56 is ______% of 125
What number is 45% of 680?
Solve the following: 315 is 126% of
If a number increases from 47 to 70.5, what is the rate of increase?

56 = x*125
x = 56/125 = 0.448 or 44.8%
45% = .45, so
.45*680 = 306
125% = 1.25, so
315 = 1.25x
x = 315/1.25 = 252
% increase is the change divided by the initial value, so we have
(70.547)/47 = .5 or a 50% increase 
Natureland garden center buys lawn mowers that list for $679.95 less a 30% trade discount what is the dollar amount of the trade discount?