Question

A bank randomly surveyed 50 of its customers by mail to find out how customers use its mobile banking service. The survey found that only 11 of the 50 customers used the service.

If the branch has 1,700 customers, about
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customers use the mobile banking service.

Answer 1

like a first step calcule 11 is how many percent of 50 ,suppose you get x percent so after this
just you need calcule this x percent of 1700 customers and in this way will get the correct answer sure easy

hope helped understandably