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#1 2018-06-20 17:44:34

Zeeshan 01
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Registered: 2016-07-22
Posts: 673

Percentage

Question 1 : Two numbers are respectfully 20% and 50% more than a third , what percentage is the first to the second?

Question 2: If Ali salary is 35% more than that of Hashim , How much percent is Hashim salary less than that of Ali?

Question 3: If Maryam's salary is 25% less than that of Fatima, then how much percent is Fatima's salary more than that of Maryam?

Question 4: After deduction 20% from a certain sum, and then 30% from the remainder , there is 3500 left. Find the original sum?


MZk

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#2 2018-06-23 21:08:10

bob bundy
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Registered: 2010-06-20
Posts: 8,371

Re: Percentage

In these call one amount x and construct an equation from that.

E.g.. Q2 let Hashim be x

Then Ali = 1.35x

percentage less = difference / Ali x 100 = 0.35/1.35 x 100

Bob


Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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#3 2018-06-25 17:40:33

Zeeshan 01
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Registered: 2016-07-22
Posts: 673

Re: Percentage

how difference is 0.35??


MZk

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#4 2018-06-25 17:41:35

Zeeshan 01
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Registered: 2016-07-22
Posts: 673

Re: Percentage

Explain this formula..


MZk

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#5 2018-06-25 19:29:44

bob bundy
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Registered: 2010-06-20
Posts: 8,371

Re: Percentage

difference is 1.35x - x = 0.35x

So difference over reference pay = 0.35x / 1.35x = 0.35/1.35

Then times by 100 to get a percentage.  Sorry I used x again instead of 'times' for the multiply.

Bob


Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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#6 2018-06-26 00:46:43

Zeeshan 01
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Registered: 2016-07-22
Posts: 673

Re: Percentage

Ali 1.35x??


MZk

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#7 2018-06-26 00:48:33

Zeeshan 01
Member
Registered: 2016-07-22
Posts: 673

Re: Percentage

Ali salary must be  0.35x


MZk

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#8 2018-06-26 03:01:32

bob bundy
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Registered: 2010-06-20
Posts: 8,371

Re: Percentage

If Ali salary is 35% more than that of Hashim

So Ali's salary is bigger than Hashim's.

If Hashim earns $100 the Ali earns $100 + 35/100 times 100 = $135.

If Hashim earns x then Ali earns x + 35/100 times x = x + 0.35x = 1.35x

Bob


Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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#9 2018-06-26 16:49:49

Zeeshan 01
Member
Registered: 2016-07-22
Posts: 673

Re: Percentage

This topic is given in math is fun web site?


MZk

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#10 2018-06-26 21:34:16

bob bundy
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Registered: 2010-06-20
Posts: 8,371

Re: Percentage

hi Zeeshan 01

There's lots on percentages here:

https://www.mathsisfun.com/numbers/perc … hange.html

and there are links to other useful pages.

I have looked at all the questions.  But you have got to learn how to do them so I'm not going to give you answers to them all.

I suggested a method that would work for them all.  Call one of the amounts x.

eg. Q1

Call the third amount x.

Then the first is 1.20x and the second is 1.50x.

Now you can work out the answer.  Here, like the one I showed before, the 'x' cancels out of the final answer.

Bob


Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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