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Olivia and Jessica have in total half as many sweets as Fran and Gary have in total - Edexcel - GCSE Maths - Question 15 - 2021 - Paper 3

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Olivia and Jessica have in total half as many sweets as Fran and Gary have in total. Fran and Gary share their sweets in the ratio 2:3 Olivia and Jessica share thei... show full transcript

Worked Solution & Example Answer:Olivia and Jessica have in total half as many sweets as Fran and Gary have in total - Edexcel - GCSE Maths - Question 15 - 2021 - Paper 3

Step 1

Fran and Gary share their sweets in the ratio 2:3

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Answer

Let the total number of sweets that Fran and Gary have be represented as the sum of their parts in the ratio. If we denote Fran's portion as 2k and Gary's portion as 3k, then:

extTotalsweetsforFranandGary=2k+3k=5k ext{Total sweets for Fran and Gary} = 2k + 3k = 5k

Step 2

Olivia and Jessica share their sweets in the ratio 9:1

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Answer

Let the total number of sweets that Olivia and Jessica have be represented as:

If Olivia has 9m sweets and Jessica has 1m sweets, then:

extTotalsweetsforOliviaandJessica=9m+1m=10m ext{Total sweets for Olivia and Jessica} = 9m + 1m = 10m

Step 3

Finding the relationship between the totals

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Answer

According to the problem, Olivia and Jessica have half as many sweets as Fran and Gary, thus:

10m = rac{1}{2}(5k)
which simplifies to: 10m = rac{5k}{2}
Multiplying both sides by 2 gives: 20m=5k20m = 5k
Therefore, we have: k=4mk = 4m

Step 4

Calculate each person's share and form the ratio

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Answer

Now, substituting kk back into the expressions for sweets:

  • Fran: w=2k=2(4m)=8mw = 2k = 2(4m) = 8m
  • Gary: x=3k=3(4m)=12mx = 3k = 3(4m) = 12m
  • Olivia: y=9my = 9m
  • Jessica: z=1mz = 1m

Thus, the ratio is: w:x:y:z=8m:12m:9m:1mw:x:y:z = 8m:12m:9m:1m

To simplify this ratio: 8:12:9:18:12:9:1

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