exam Maths Puzzle Numerical Ability

plz help me with this plz? iv been up all night trying to figure it out. its 26cm/s=?m/min. plz help

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exam Other Question

P = R - C
_______
n Solve for R (Business)
Can you help??? Simply the following:
(3a^2)^-2

and
6x^-2 divided by x^-3

Thanks for helping!!