exam Maths Puzzle Numerical Ability

If a a paint mixture uses 60 pounds of solvent for 75 gallons of paint, how many pounds of solvent are needed for 90 gallons of paint?

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exam Other Question

On Wednesday, Roman drove to work in 45 minutes. On Thursday he averaged 12miles per hour more, and it took him 9 minutes less to get to work. Hoew far does he travel to work? For the interest forumla A=P(1+r/2)^2t

a.) How many times per year is the interest compounded, in monnths?
b) if $17,462 is invested in a chicken farm, using the given formula,