a library expansion began in 2002, was expected to cost $127million. By 2006 library officials estimate the cost would be $39millon over budget. By what percent did the cost exceed the initial cost? HELLLPPP

Question

a library expansion began in 2002, was expected to cost $127million. By 2006 library officials estimate the cost would be $39millon over budget. By what percent did the cost exceed the initial cost?  HELLLPPP

anonymous · Answer

If y is a total, and x is some part of that total, then the percentage is 100x/y.

anonymous · Answer

WHAT?!

anonymous · Answer

If you have a total, say 150, then 60 is going to be what percentage of that? 60/150 = 0.4*100 = 40%. I'm trying to explain the concept, as it's a simple one and something you definitely need to know.

anonymous · Answer

dont understand i need help solving this problem

anonymous · Answer

the cost will be 39 million over budget, so the new cost is 127 + 39 = 
166 million.

There is a formula for percent increase..
new value - old value / old value and then multiply that by 100. Lets set it up..

166 (new value) - 127 (old value) / 127 (old value)
39/127  = .307 
.307 x 100 = 30.7%  which rounds to 31%

Do you understand ?