exam Maths Puzzle Numerical Ability

a bus went 398km farther than a car. The car went one third as far as the bus. How far did each vehicle travel?
choices for the cars distance: 147 151 159

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exam Other Question
Find the solutions of the equation that are in the interval [0,2π). Please show steps (especially rearranging the equation to solve it. Thanks for helping me. I know the solution is 7pi/6, 11pi/6, pi/2.

sinb+2cos^(2)b=1 Can someone help me on this problem? I put it through last night, but I typed in the equation wrong.

Which of the ordered pairs (3, 1), (0,-4), (-4, 0), (-3, -7)

are solutions for the equation x - y = 4?

Thanks,
Sher