Sorting junk mail
This task is about reading information from a frequency table.
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In a week, Sarai calculates the average number of pieces of junk mail she gets as 5 per day.
The number of pieces for 6 days is given in the table below.
Fill in the missing number for Friday:
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b)
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Sarai always skims through her junk mail looking for bargains.
She finds that it takes on average 10 minutes per piece.
How long did it take her for the week? __________
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c)
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Courtney lives in a city where junk mail is not delivered on a Monday.
She calculates that the average for the other 6 days is 6 pieces per day.
How many items of junk mail does Mrs Senical get in a week? __________
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d)
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Courtney weighs all her junk mail for the week, and finds that it comes to 1.5 kg.
There are 30,000 households in the city, and they all get the same amount of junk mail each day.
How many tonnes of paper is this for the week? (1 tonne = 1,000 kg) __________ tonnes
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