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IGCSE MATHS DOUBTS HERE !!!!

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MalloryKnox:
@astarmathsandphysics - Please help me with this! -

Jenny uses her mum's scone recipe to make cheese scones.

Her recipe uses a mixture of self-raising flour, butter and cheese in the ration 6:2:1 by weight
In her kitchen Jenny has:
2kg self raising flour
500g butter
200g cheese

When Jenny makes cheese scones each scone weighs about 45g.

Work out the largest number of cheese scones that Jenny can make.

Dasith:
Well i dont do maths but i think i can help you with this...

Well in the ratio the smallest portion used is the cheese(which is also the limiting factor you can find this by bringing 2kg : 500 g : 200g into a ratio too) which contributes to the mixture by 1/9 you arrive @ the 9 by adding (6+2+1).

If this was the case : weight of final mixture multiplied by 1/9 should give you 200..
let us take weight of final mixture as X

X * 1/9 = 200
X         =200 x 9
X         =1800 grams

so we have the weight of the final mixture(this would the the best possible mixture jenny could come up with assuming she intends to make as many cheese scones as possible).

And the largest amount of cheese scones she can make = 1800 / 45
                                                                          =40

                               

astarmathsandphysics:
Thanks D

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