This recipe makes 12 flapjacks. How much of each ingredient is needed to make 30 flapjacks by following this recipe?

Recipe: Makes 12 flapjacks
140 g margarine
120 g sugar
100 mL syrup
240 g oats
50 g raisins

See Below.

Step-by-step explanation:

In order to make 30 flapjacks you would double the ingredients you already have.

Therefore to make 24 flapjacks you need:  

280 g margarine

240 g sugar

200 mL syrup

480 g oats

100 g raisins

In order to find the remaining 6 we would half the initial ingredients to make 12.

Therefore to make 6 flapjacks you need:  

70 g margarine

60 g sugar

50 mL syrup

120 g oats

25 g raisins

Now by adding both the ingredients we have calculated above the recipe for 30 Flapjacks is as follows:

Recipe for 30 Flapjacks:  

350 g margarine

300 g sugar

250 mL syrup

600 g oats

125 g raisins

Hope this helps.

about 0.75 hours

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4