 
<translate> Aiki da A ya yi a cikin kwanaki 3 = 3/5 Sauran aikin = 2/5 Aikin da A da B suka yi a rana ɗaya = 1/5 + 1/10 = 3/10 Ragowar aiki = 2/5 * 10/3 = 4/3 kwanaki. Saboda haka amsar karshe ita ce (A). <eng> Work done by A in 3 days = 3/5
Remaining work = 2/5
Work done by both A and B in one day = 1/5 + 1/10 = 3/10
Remaining work = 2/5 * 10/3 = 4/3 days. So the final answer is (A). 