Question

p, q and r complete a work in 36 days. if the ratio of efficiency of p, q and r is 3:2:1 respectively, then in how many days r alone can complete the same work​

Answer 1

let ratio of p q r =x

p q r complet work in 36 day then p+q+r = 3x+2x+x=6x

toltal work done in 36 day =36×6x=196x

r alone complet the work =196x/x=196day

so r complet the work in 196day