Others Maths Puzzle Numerical Ability

if X+(1/X)=1, then what is the value of

(X^2+3X+1)/(X^2+7X+1)..

How to solve this kind of problems..

Read Solution (Total 1)

x+(1/x)=1 so (x^2)+1=x
(x^2+3x+1)/(x^2+7x+1)=((x^2+1)+3x)/((x^2+1)+7x)=(x+3x)/(x+7x)=4x/8x= 1/2
so ans is 1/2 =0.5
9 years agoHelpfull: Yes(3) No(0)

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P, Q and R can do a work in 20, 30 and 60 days respectively. How many days does it need to complete the work if P does the work and he is assisted by Q and R on every third day?

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