A telemarketer calls people and tries to sell them a subscri

A telemarketer calls people and tries to sell them a subscription to a daily newspaper. On 19% of her calls, there is no answer or the line is busy. She sells subscriptions to 6% of the remaining calls. For what proportion of calls does she make a sale?

Solution

Solution:

A telemarketer calls people and tries to sell them a subscription to a daily newspaper. On 16% of her calls, there is no answer or the line is busy.
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78% answer (100% - 22%)

She sells subscriptions to 6% of the remaining calls.

6% of 78% =0.06(0.78)=0.0468=4.68%

For 4.68% of proportion of calls does she make a sale