The ratio of stanley's colored markers to jiayi's markers was 4: 1. jiayi had a big art project to work on, so stanley let her borrow 50 markers. as a result, the ratio of stanley's markers to jiayi's changed to 2: 3. if jiayi ended up with 75 markers, how many markers did stanley start with? plz tell me how u got the answerplz answer this question asap this is due tomorrow      thx

To know the answer to this we work our way backwards.

First we'll have a proportion since we know Jiayi ended up with 75 markers and the ratio of Stanley's markers to Jiayi's is now 2:3. We let the number of Stanley's markers at the end be denoted by x and solve the proportion:





We know that Stanley had 50 markers by the end, and since he let Jiayi borrow 50 markers, then he should've had 100 markers at the start.

ANSWER: Stanley started with 100 markers.