Average cost

A man bought 1 dozen banana at Rs 60 and 8 apples at Rs 120 . What is the average cost of each?

Correct answer:

a =  84 Rs

Step-by-step explanation:

n1=12 c1=60 Rs  n2=8 c2=120 Rs  a=n1+n2n1 c1+n2 c2=12+812 60+8 120=84 Rs

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