Question 898608
Proportion exercise.


1 piece of work in 15 days.
{{{(1/15)(job/day)}}}.
Your first question is {{{(1/15)}}} of the job.


How much of the piece of work in 3 days?
{{{highlight_green(1/15=j/3)}}}   for j jobs in 3 days.
{{{j=(1/15)*3}}}
{{{highlight(j=1/5)}}} of the job.


You can answer the next two questions, because you already see what is variable and where it is positioned in the proportion.