exam Maths Puzzle Numerical Ability

80% of the kids liked ducks more than bats. if 300 kids liked bats, how many liked ducks?

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exam Other Question

how to solve using the U substitution method
(x-1/2)^2 +5(x-1/2)-4=0
This is not a book HOMEWORK
A sociologist studying the justice system has just written a paper detailing her findings after she examined the records of thousands of inmates. Among