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 374 663 1,037 1,326 customers use the mobile banking service.

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 374 663 1,037 1,326 customers use the mobile banking service.

shadowlegendx · Answer

Do you have an idea of how to start this?

shadowlegendx · Answer

If you do, or don't know, please let me know

shadowlegendx · Answer

??

ovidia · Answer

no

shadowlegendx · Answer

We will be comparing two ratios

shadowlegendx · Answer

50 customers to 11 that used the service

and

1700 customers and x 

Let x = number of costumers that use the service

shadowlegendx · Answer

$$\frac{ 50 }{ 11 } = \frac{ 1,700 }{ x }$$

Cross multiply

$$50x = 18,700$$

Isolate x by dividing the entire equation by 50

$$x = 374$$

shadowlegendx · Answer

x = number of customers that use the service, if there are 1,700 customers total
x = 374

Therefore 374 customers use the mobile banking service, out of 1,700 customers

shadowlegendx · Answer

@ovidia Got it?

ovidia · Answer

yes