anikabarnhart
02.08.2019 •
Mathematics
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?
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Ответ:
x= Stanley's colored markers
y=Jiayi's markers
We have the following system:
Initial relationship:
4/1=x/y
Stanley let her borrow 50 markers:
2/3=(x-50)/(75)
x-50=(2/3)*75
x=(2/3)*75 + 50 =100
Stanley start with 100 markers
Ответ: