use unitary method
for 5 it costs 330p
so for 1 choc it will cost 330/5
to get 9,
(330/5) =66
66 multiplied by 9 =594
therefore 9 will cost 594p
5 c h oc k i ces cos t 330 p 9 c h oc k i ces cos t x R a t i o : 5 − 330 9 − x C ross m u lt i pl i c a t i o n 5 x = 330 ∗ 9 5 x = 2970 ∣ d i v i d e b y 5 x = 594 9 w i ll cos t 594 p .
To find the cost of 9 choc ices, we first calculated the cost of one choc ice, which is 66p. Multiplying this by 9 gives a total of 594p for 9 choc ices.
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