A can do a piece of work in 8 days. If B can do it in 10 days, in how many days canboth working together do it?Solution 1 Let x= the required number of days, then = the part of the work both can do in 1 x day; 1 1 = the part of the work A can do in 1 day; = the part of the work B can do in 1 x x day: 1 1 1 9 = + , or x 8 10 10 40 4 Solving, x = = 4 , the required number of days. 9 9Помогите перевести