I can't remember how to figure that out on a calculator.
2007-12-15 05:00:06 · 7 answers · asked by happy b 1 in Science & Mathematics ➔ Mathematics
Question 1
Reading as $42 after 20% off:-
80%<--->$42
100%<--> (100/80) x $42 = 5/4 x $42 = $210/4
$52.50
Question 2
Reading as $42 before 20% off:-
100%<---->$42
80%<-----> (80/100) x $42 = (4/5) x $42
$168 / 5
$33.60
2007-12-18 01:07:49 · answer #1 · answered by Como 7 · 3⤊ 0⤋
42 x 20%= 42/1x 1/5=42/5=8 2/5=8.4
42-8.4=33.6
2007-12-15 14:18:24 · answer #2 · answered by Dave aka Spider Monkey 7 · 1⤊ 0⤋
On a calculator, you would do......42 divided by 100 to get 1% that=0.42 then you do that multiplied by 20-cause its 20% and the answer would be 8.4- you then do 42-8.4 that = 33.60
2007-12-15 13:11:44 · answer #3 · answered by Jasmine 1 · 1⤊ 0⤋
Look
20% off menas (100-20) =80%
So, 100% is giving ----> 42
1% is giving-----> 42/100
80% is giving----> 42*80/100
=33.6
2007-12-15 13:29:20 · answer #4 · answered by Anonymous · 1⤊ 1⤋
just do 42 mulitpled by .2 and then subtract 42 from that answer.
so you get 42-8.4 which is then 33.6
2007-12-15 13:03:52 · answer #5 · answered by Anonymous · 1⤊ 1⤋
42*.20=8.4
42-8.40=
$33.60
2007-12-15 13:07:52 · answer #6 · answered by Anonymous · 0⤊ 0⤋
42.00 x .80 = 33.60
There you go
2007-12-15 13:07:36 · answer #7 · answered by ttown_69 3 · 1⤊ 0⤋