A building contractor buys 60% of his cement from supplier A and 40% from supplier B. A total of 80%


A building contractor buys 60% of his cement from supplier A and 40% from supplier B. A total of 80% of the bags from A arrive undamaged, while
90% of the bags from B arrive undamaged. Find the probability that an undamaged bag is from supplier B.
The probability is


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