Question

a Is twice as good a workman as b. together they finish a piece of work in 18 days.in how many days will a alone finish his work

Answer 1

if a is double of b they finished worked in 18 days, think a as 2 person bcoz a is twice good as b, we should divide 18\3, 2 fr a & 1 fr b
answer will be 6 & 6 is b, so 18-6=12 a will finish his work in 12 days bcoz he is twice gud as b which is 6+6= 12.