SOLUTION: Jackson alone can mark exam scripts in 7 days and his wife can mark same is 10 days. if they work together, what fraction of the work can they do in a day?
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Question 1137565: Jackson alone can mark exam scripts in 7 days and his wife can mark same is 10 days. if they work together, what fraction of the work can they do in a day? Answer by ikleyn(52848) (Show Source):
Jackson makes of the job per day. It is his rate of work.
His wife makes of the job per day. It is her rate of work.
When they work together, they do = = of the job per day. ANSWER
The rate of work of two individuals working together is the sum of their individual rates.
