All of the following are equal EXCEPT _____.

$360.00

15% off $420.00

10% off $400.00

25% off $480.00

giving a metal

Question

All of the following are equal EXCEPT _____.

$360.00

15% off $420.00

10% off $400.00

25% off $480.00

giving a metal

mathmate · Answer

hint: the calculator is your best friend!

anonymous · Answer

i dont use calculators but i guess so @mathmate

mathmate · Answer

You're quite right.  The above sums can be all handled mentally, although not expected of most students.

anonymous · Answer

i guess

anonymous · Answer

1) 10% of 400 (or 0.1 x 400) = 40. 
400 - 40 = 360. It's not this one.

2) 25% of 480 (or o.25 x 480) = 120.
480 - 120 = 306. It's not this one.

3) 15% of 420 = 63.
420 - 63 = 357.

THEREFORE - the odd one out is 15% off of 420.

anonymous · Answer

thank you @jakelipman