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
Question 15
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
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
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=5k
Therefore, we have:
k=4m
Step 4
Calculate each person's share and form the ratio
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Answer
Now, substituting k back into the expressions for sweets: