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Maths Riddle

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1 Maths Riddle on Thu Dec 04, 2014 2:58 pm

hackme

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Question: If 1/2 of 5 is 3, then what is 1/3 of 10?


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2 Re: Maths Riddle on Thu Dec 04, 2014 4:05 pm

Kylexy


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7

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3 Re: Maths Riddle on Fri Sep 09, 2016 11:39 am

Kessie Nartey

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3 is the answer


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4 Re: Maths Riddle on Fri Sep 09, 2016 12:12 pm

Felizo

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the answer is 3.333333333


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5 Re: Maths Riddle on Sat Sep 10, 2016 3:41 pm

samkiss


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the answer is 3.8

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6 Re: Maths Riddle on Sun Sep 11, 2016 6:22 am

chinesta10

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Actually, 1/2 of 5 = 2.5... But to be in line with the question when 2.5 is rounded to the nearest whole number, it becomes 3... Hence 1/2 of 5 = 3...

This implies that;

if 1/2 x 5 = 3
then 1/3 x 10= ?

Lets represent that unknown variable with Y, therefore the above relation becomes

5/2 = 3
10/3 = Y

Next, you have to cross multiply. So;

5/2 x Y = 10/3 x 3
5/2Y  =  10
                 
now you multiply both sides by the denominator 2,    
5Y =  2 x 10
5Y =  20

divide both sides by 5 gives;

5Y/5  = 20/5    

Therefore

Y  = 4      

So in conjunction with the question if 1/2 of 5 is 3, then 1/3 of 10 is 4 as required.....

I guess i helped in solving this question.... Thanks



Last edited by chinesta10 on Sun Sep 11, 2016 6:25 am; edited 1 time in total (Reason for editing : typing mistake)


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