Help with mathematic problem solving question.
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andrewthomas2008
Posts: 164 Forumite
Sorry if this is wrong section
Helping nephew with homework. Want to make sure I'm answering correctly before I explain how to work it out as he isn't sure himself. I'm terrible at math so don't be brutal.
Fiona's bus fare to work is £1.50. it goes up to £1.80. write the new fare as a fraction of the old bus fare.
My answer is 1.80 - 1.50 = 0.30 then 0.30 / 0.2 = 1/5
Luke buys a house for £150000 and sells it for £200000. Write the selling price as a fraction of the original price in its simplest form.
My answer is 200000 - 150000 = 50000. Then 50000 / 150000 = 0.33 = 33/100
Appreciate any answers
Helping nephew with homework. Want to make sure I'm answering correctly before I explain how to work it out as he isn't sure himself. I'm terrible at math so don't be brutal.
Fiona's bus fare to work is £1.50. it goes up to £1.80. write the new fare as a fraction of the old bus fare.
My answer is 1.80 - 1.50 = 0.30 then 0.30 / 0.2 = 1/5
Luke buys a house for £150000 and sells it for £200000. Write the selling price as a fraction of the original price in its simplest form.
My answer is 200000 - 150000 = 50000. Then 50000 / 150000 = 0.33 = 33/100
Appreciate any answers
Girlie Girl
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Comments
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You are nearly there with the first answer. The new price is a fifth BIGGER than the old price though, so the answer is 1 + 1/5, which is 6/5. This is one of those times when you have to do a common sense check - the bigger price has to be a big fraction of the smaller price so you need a big fraction where the top number is bigger than the bottom number.
I suspect that the 2nd question is similar (have you left out some words?) - and the new price as a fraction of the old is 4/3 (but perhaps they are asking for decimals or percentages? )I was a board guide here for many years, but have now resigned. Amicably, but I think it reflects very poorly on MSE that I have not even received an acknowledgement of my resignation! Poor show, MSE.
This signature was changed on 6.4.22. This is an experiment to see if anyone from MSE picks up on this comment.0 -
I agree with jobbing musician. Put the new price over the old price and cancel the fraction down.0
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Has Fiona tried split ticketing :money:Some days you're the dog..... most days you're the tree!0
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andrewthomas2008 wrote: »Sorry if this is wrong section
Helping nephew with homework. Want to make sure I'm answering correctly before I explain how to work it out as he isn't sure himself. I'm terrible at math so don't be brutal.
Fiona's bus fare to work is £1.50. it goes up to £1.80. write the new fare as a fraction of the old bus fare.
My answer is 1.80 - 1.50 = 0.30 then 0.30 / 0.2 = 1/5
Luke buys a house for £150000 and sells it for £200000. Write the selling price of the original price in its simplest form.
My answer is 200000 - 150000 = 50000. Then 50000 / 150000 = 0.33 = 33/100
Appreciate any answers
1) 1.8/1.5= 1.2 , 0.2/1 =5 thus 1/5
2) 200k/150k =1.333 , 1/0.333=3 thus 1/30 -
jobbingmusician wrote: »You are nearly there with the first answer. The new price is a fifth BIGGER than the old price though, so the answer is 1 + 1/5, which is 6/5. This is one of those times when you have to do a common sense check - the bigger price has to be a big fraction of the smaller price so you need a big fraction where the top number is bigger than the bottom number.
I suspect that the 2nd question is similar (have you left out some words?) - and the new price as a fraction of the old is 4/3 (but perhaps they are asking for decimals or percentages? )
Yes I did miss a few words, which I've just edited. Sorry about that and thanks for the help.
Actually I get you what you're saying.Girlie Girl0 -
1.2 / 6/5ths0
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fractions : the correct answers are 6/5 and 4/3
but this is the British education system which does have some weird interpretations of some basic concepts.0 -
1.2 / 6/5ths
Cheers I understand the answer but what is the working out please.
I get that 1.8/1.5 = 1.2 so that's 1/5 more than the original price, so it's 6/5
So 1.5 X 1.2 = 1.80 which is the new price. But I need to be able to show it to an 11 year how to covert the decimals into the fraction of 6/5.
I get 200000 / 150000 = 1.33 so that makes it 1/3 more than the whole which is
So it's 4/3 but when you multiply 150000 by 1.33 you don't get 200000.
How do I show the fraction be 1/3 added to the 1 aka whole.
Sorry I know I sound stupid but 1.33 would be 33/100 but you can't simply 100 by 33 to make it 1/3.
Or do you just ignore the fact for numbers like 0.33 or do I use an approximation.Girlie Girl0 -
getmore4less wrote: »fractions : the correct answers are 6/5 and 4/3
but this is the British education system which does have some weird interpretations of some basic concepts.
Cheers I understand the answer but what is the working out please.
I get that 1.8/1.5 = 1.2 so that's 1/5 more than the original price, so it's 6/5
So 1.5 X 1.2 = 1.80 which is the new price. But I need to be able to show it to an 11 year how to covert the decimals into the fraction of 6/5.
I get 200000 / 150000 = 1.33 so that makes it 1/3 more than the whole which is
So it's 4/3 but when you multiply 150000 by 1.33 you don't get 200000.
How do I show the fraction be 1/3 added to the 1 aka whole.
Sorry I know I sound stupid but 1.33 would be 33/100 but you can't simply 100 by 33 to make it 1/3.
Or do you just ignore the fact for numbers like 0.33 or do I use an approximation.
Also do you have any suggestions on how to make it simpler?Girlie Girl0
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