estimate current cost via index

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November 28, 2015 at 8:17 pm #286022
ahmed02
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4 years ago x cost 5 per and price index of x stood 150.the same index now stand at 430.
what is the current cost per kg?
answer: 5*(430/150)

question:
1. Cant uderstand the equation!!!
November 29, 2015 at 7:55 am #286061
John Moffat
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You need to watch our free lectures on index numbers. I cannot type out the whole lecture here 🙂

(Our lectures are a complete course for Paper F2 and cover everything you need to be able to pass the exam well.)
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