A can do a piece of work in 20 days and B the same work piece of work in 40 days. if A and B work on alternate days, beginnin with A the work is finished during the course of the ........day when .......is working......
a.26th,A b.27th,A c.26th,B d.27th,B
Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
OK, so the base data is: A is doing 1/20 per day and B is doing 1/40 per day. If they work daily alternating, in two days 1/20 + 1/40 = 3/40 is done in 2 days. Thus of two day units they need 40/3 = 13 1/3.
Next take a closer look at the fourteenth unit. After 13 units, meaning 26 days 13*3/40 = 39/40 of the work is done and it's A's turn on the 27th day because A started. Also A will finish the work because it is 1/40 left and A can do 1/20, which is more. So answer b is correct.