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The mass of Amy was 60 kg.  

After a month, her mass decreased to 55 kg.  

Calculate the percentage decrease in the mass of Amy.

Now choose the working to use to start solving the problem.

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Wesley's monthly salary was increased from $2300 to $3220.  

Calculate the percentage increase in his monthly salary.

Fill in the blanks for the working below

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A class sold 308 concert tickets,

which is 55% of the total number of concert tickets sold.  

Find the total number of concert tickets sold.

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At a computer fair, the printer below was sold at a discounted price of $276.  Calculate the percentage discount on the printer.

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A dress costs $63.92 after a 6% discount.  

How much did the dress cost initially?

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