exam Maths Puzzle Numerical Ability

simplify

54m third power/9m fourth power

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exam Other Question

if you osve this,can you please break down the steps and explain what to do because i dont know what to do when you 3 equations like these:

A=11B
A+x=5(B+x)
A+x+5=3(B+x+5) Say that a town has 1,000 residents,of whom 60% are women and 40% are men.Of the women,40% wear one earring.Half of the rest wear 2 earrings,and half wear none.Of the men,60% wear