maths probability solution please
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maths probability solution please
Someone please help me how to solve this!!
i have 140 books. i find that 60% of the total number of books are paperbacks. the fiction books make up 0.3 of the total and 1/7 are by my favourite author.
How many books are likely to be paperback, non-fiction by my favourite author?
Thanks in advance.
i have 140 books. i find that 60% of the total number of books are paperbacks. the fiction books make up 0.3 of the total and 1/7 are by my favourite author.
How many books are likely to be paperback, non-fiction by my favourite author?
Thanks in advance.
Re: maths probability solution please
1/7 are by favourite author - 1/7 of 140 = 20idl wrote: i have 140 books. i find that 60% of the total number of books are paperbacks. the fiction books make up 0.3 of the total and 1/7 are by my favourite author.
How many books are likely to be paperback, non-fiction by my favourite author?
Can you complete it now?
Re: maths probability solution please
Hi
Thanks for the prompt reply.
I did that bit.
It said 60% paperback --- 84
0.3 of total are fiction --42
1/7 are fav --20
according to Question: likely to be paperback and non-fiction: 84+98(140-42!) by my fav author...dont know what to do after this...
Thanks for the prompt reply.
I did that bit.
It said 60% paperback --- 84
0.3 of total are fiction --42
1/7 are fav --20
according to Question: likely to be paperback and non-fiction: 84+98(140-42!) by my fav author...dont know what to do after this...
Re: maths probability solution please
I don't think you need to do this - the question is actually a bit vague.
If 0.3 are fiction then 0.7 are non-fiction.
So 20 x 0.7 = 14 would be my answer.
If 0.3 are fiction then 0.7 are non-fiction.
So 20 x 0.7 = 14 would be my answer.
Re: maths probability solution please
ans was given as 8! Im struggling to fig this out
Re: maths probability solution please
OK we need the paperback ones so we need to find 60% of 14 = 8.4!!
Very dodgy
Very dodgy
Re: maths probability solution please
isn't it!! but options are whole numbers, no deci...
Re: maths probability solution please
Someone has made a mistake with the question as the answer should be a whole number. Can you double check the numbers you posted?
Re: maths probability solution please
Where on earth did this question come from?
Outside of a dog, a book is a man's best friend. Inside of a dog it's too dark to read.Groucho Marx
Re: maths probability solution please
I checked and read the question many times..this is from Bond 11+ test papers