exam
Maths Puzzle
Numerical Ability
The time t required to drive a fixed distance varies inversely as the speed r. It takes 5hr at 55mph to drive a fixed distance. How long would it take at 40mph?
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exam Other Question
Find the following power. Express your answer in scientific notation.
(5 X 10 to the 3rd power) -1 power
y=3x+5