Math Is Fun Forum

Zeeshan 01

Member

Registered: 2016-07-22

Posts: 746

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?

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Malik

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

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

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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
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Zeeshan 01

Member

Registered: 2016-07-22

Posts: 746

Re: Percentage

how difference is 0.35??

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Malik

Zeeshan 01

Member

Registered: 2016-07-22

Posts: 746

Re: Percentage

Explain this formula..

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Malik

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

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

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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
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Zeeshan 01

Member

Registered: 2016-07-22

Posts: 746

Re: Percentage

Ali 1.35x??

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Malik

Zeeshan 01

Member

Registered: 2016-07-22

Posts: 746

Re: Percentage

Ali salary must be  0.35x

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Malik

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

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

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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
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Zeeshan 01

Member

Registered: 2016-07-22

Posts: 746

Re: Percentage

This topic is given in math is fun web site?

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Malik

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

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

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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
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Sresta702

Member

Registered: 2018-09-07

Posts: 1

Re: Percentage

Ans what ??

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: Percentage

hi Sresta702

Welcome to the forum.

Which ans?  I like to encourage posters to work things out for themselves.

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
Sometimes I deliberately make mistakes, just to test you!  …………….Bob