Respuesta :

So u need to use 3.50/10*3

0.35*3=1.05

dexteright02
Solving: Rule of three (directly proportional)
10 cakes → £3.50
3 cakes → y

[tex] \frac{10}{3} = \frac{3.50}{y} [/tex]
Product of extremes equals product of means:
[tex]10*y = 3.50*3[/tex]
[tex]10y = 10.5[/tex]
[tex]y = \frac{10.5}{10} [/tex]
[tex]y = 1.05[/tex]

Therefore:
3 cakes cost £1.05

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