Question

Que 19 Plz answer Step by step. Thanks.

Answer 1

ANS

A+B=1/16................1

B+C=1/20................2

A+C=1/24.................3

adding all eqns, we get

2(A+B+C)=1/16+1/20+1/24

                                 taking LCM

2(A+B+C)=(15+12+10)/240

A+B+C=37/480

word done A,B,C  12 36/37 days