Answered

The price of a notebook was


$3.90


yesterday. Today, the price fell to

$3.40

. Find the percentage decrease. Round your answer to the nearest tenth of a percent.

Verified Answer :

lukyo


Old price: p1 = $ 3.90;

New price: p2 = $ 3.40.


The percentual decrease is given by

d(%) = [ (p2 - p1) / p1 ] 100 %

d(%) = [ (3.40 - 3.90) / 3.90 ] 100 %

d(%) = [ - 0.50 / 3.90 ] 100 %

d(%) = - 0.128 100 %

d(%) = - 12.8 % (approximately)


So the price fell 12.8 % approximately.


I hope this helps. =)

Related Questions