exam
Maths Puzzle
Numerical Ability
If the product of the roots of a quadratic equation is -1/4 and the sum of the roots of the same quadratic equation is 5/2, the equation may be
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exam Other Question
Skip and Laurie paddle a raft 15 miles downstream in 3 hours. On the return trip, they paddle the raft the same distance upstream in 5 hours. Find the rate of the current.
substitution method
m-2n=16
4m+n=1