Question

10 boys can deliver morning newspapers in a colony in 3 hours . If 2 more boys join,
in how many hours the same number of newspapers be delivered

Answer 1

Answer

2.5 hours

Step-by-step explanation:

as this is a case of indirect proportion : x1/x2 = y2/y1

                                                                 10/12 =y2/3

                                                                 y2 = 10 * 3/12

                                                                  y2 = 2.5