book Maths Puzzle Numerical Ability

Can someone help me with this problem?

6.5% of what number number is 325?

Thanks,
Sher

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book Other Question

I am stumpted on this problem. Can someone out there help me?

I need to find the rate:

240 ponds of fertilizer/6 lawns

Thank you!
Sher Please....Find the vertex,focus, and directix of the graph of the equation
8(y+2)=(x+6)^2