SOLUTION: Ryan can do a job in 12 days. After he has worked for 4 days he is joined by Sandy. The finish the job together in 2 more days. How long will it take Sandy to do the whole job alon

Question 1011882: Ryan can do a job in 12 days. After he has worked for 4 days he is joined by Sandy. The finish the job together in 2 more days. How long will it take Sandy to do the whole job alone?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
RT=J relates each person's rate, time, amount of work or amount of job.
Rate unit is JOB/DAYS.

Ryan's rate,
Sandy's rate, , you do not know and must solve this.
Combined rate,

Ryan worked alone 4 days, and then Ryan & Sandy worked together for 2 days, and the job was finished (1 whole job).

.

Ask further if you need help with the arithmetic or algebra steps.

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Sandy's rate is , or .
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