In the day the number of purchasers was 37 and the number of nonpurcharses is 13
To determine the purchasers/nonpurchasers you have to divide the number of people that purchased something by the number of people that only browsed the store
[tex]\frac{37}{13}[/tex]The nonpurchasers to purcharsers ratio follows the same logic, divide the number of people that didn't buy something by the number of people that made purchases
[tex]\frac{13}{37}[/tex]The total customers of the store is
[tex]37+13=50[/tex]The ratio purchasers to total customers ratio is
[tex]\frac{37}{50}[/tex]