2025 M Revision IGCSE Math 0580/41May/June 2022

IGCSE Mathematics 0580

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IGCSE 0580/41 May/June 2022

Poll

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Labelling

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9

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Working Solution

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(c) (i) The time, t minutes, spent on homework in one week by each of 200 students is recorded. The table shows the results.

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​Calculate an estimate of the mean

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(c) (i) The time, t minutes, spent on homework in one week by each of 200 students is recorded. The table shows the results.

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​Calculate an estimate of the mean

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(ii) A new table with different class intervals is completed.

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2 (a) Alex, Bobbie and Chris share strawberries in the ratio Alex : Bobbie : Chris = 3 : 2 : 2.Chris receives 12 strawberries

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2. (b) In a sale, a shop reduces all prices by 12%.(i) Dina buys a book which has an original price of $6.50

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​2.b.

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​2.(c) Feri invests some money. The rate of interest for the first year is 2.5%.At the end of the second year the overall percentage increase of Feri’s investment is 6.6%.

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​2.d. A radioactive substance decays at an exponential rate of 2% per day.The initial mass is 80 g

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​2.d. A radioactive substance decays at an exponential rate of 2% per day.The initial mass is 80 g

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3 (a) Geeta buys x apples, (x+7) oranges and (2x-1) bananas. The total number of pieces of fruit Geeta buys is 30

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3 (a) Geeta buys x apples, (x+7) oranges and (2x-1) bananas. The total number of pieces of fruit Geeta buys is 30

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3 (b)

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3 (b)

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3 (c)

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3 (c)ii

p = 0.5

q = 1​