A simple mathematical querry

[AMG]

Imagine there are two cables/whatever.
One costs Rs. 32 and the other Rs. 40.
And I buy the cheaper one.

Now which of the statements is correct

I bought the cheaper one because it was ----% cheaper than the other one.

Is it 25% or 20%

 

[rdst_1]

20%

 

[6pack]

www.mathsisfun.com/numbers/percentage-change.html

40-32=8
8/40=0.2
Multiply 0.2*100 to get % tage.

 

[AMG]

www.mathsisfun.com/numbers/percentage-change.html

40-32=8
8/40=0.2
Multiply 0.2*100 to get % tage.

Yep. Thats my problem. Why is is 8/40 and not 8/32?
I bought the cheaper thing. Why should I take out the percentage of the more expensive thing? Doesnt 25% sound better. Isnt that how it should be?

 

[soggy316]

What you compare decides your reference:

Q: How much more expensive was it? -> Reference is 32 - > other cable is 25% more expensive

Q: How much cheaper was it? -> reference is 40 -> the cable you bought was 20% cheaper

 

[6pack]

How will you calculate whether the wire you bought is cheaper or costlier if you don't have a reference price point?
Suppose you bought the 40 rupee one. How will you say it was costlier than the 32 rupee one without referencing the cheaper cable?

 

[ayanavish]

20%

 

[blkrb0t]

x% cheaper than WHAT?

That should always decide your reference point.

When you don't mention anything, people will assume that you are comparing it with the same product's previous pricing.

For example: Product A, now 40% cheaper.

 

[onlyravi]

Imagine there are two cables/whatever.
One costs Rs. 32 and the other Rs. 40.
And I buy the cheaper one.

Now which of the statements is correct

I bought the cheaper one because it was ----% cheaper than the other one.

Is it 25% or 20%

Seems more like a grammatical problem rather than mathematical
I bought the cheaper one because it was ----% cheaper than the other one.
Its 20% because
you say
I bought the cheaper one because it was 20% cheaper than the other one. = I bought the cheaper one because it was 20% cheaper than one which cost Rs40
The first cheaper is not required coz it’s like redundant.
Since you are mentioning the cost in comparision to cost B (which is 40 here) your cost A will be x% of B == 32 == 80% of 40 == 20% less than 40 == 20% cheaper than the other one.
Hope I am :
1) Either able to explain this problem properly so that you have understood OR
2) Confused you more

 

[AMG]

20%

5 credit

www.mathsisfun.com/numbers/percentage-change.html

40-32=8
8/40=0.2
Multiply 0.2*100 to get % tage.

50 credit

What you compare decides your reference:

Q: How much more expensive was it? -> Reference is 32 - > other cable is 25% more expensive

Q: How much cheaper was it? -> reference is 40 -> the cable you bought was 20% cheaper

50 credit

20%

5 credit

x% cheaper than WHAT?

That should always decide your reference point.

When you don't mention anything, people will assume that you are comparing it with the same product's previous pricing.

For example: Product A, now 40% cheaper.

50 credit

Seems more like a grammatical problem rather than mathematical
I bought the cheaper one because it was ----% cheaper than the other one.
Its 20% because
you say
I bought the cheaper one because it was 20% cheaper than the other one. = I bought the cheaper one because it was 20% cheaper than one which cost Rs40
The first cheaper is not required coz it’s like redundant.
Since you are mentioning the cost in comparision to cost B (which is 40 here) your cost A will be x% of B == 32 == 80% of 40 == 20% less than 40 == 20% cheaper than the other one.
Hope I am :
1) Either able to explain this problem properly so that you have understood OR
2) Confused you more

50 credit






Thanks guys. Confusion gone.

 

[avi]

^thats really a good way to say thanks

 

[ayanavish]

Payment in credit