exam
Maths Puzzle
Numerical Ability
A boat can go 22km downstream in 2 hours. The return trip takes 6 hours. What would be the speed of the boat if there were no current? What is the rate of the current?
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exam Other Question
x squared plus 4x-45 equals zero
Please help with this problem.
Simplify--
1/(a-b) + 4/(b-a) - 8/(a+b) - (11a - 5b)/(b^2 - a^2)