Question

A contractor undertakes to dig a canal which is 12 km long in 30 days and employed 80 men. He finds that after
10 days of working, 3 km of canal have been completed. How many men must now be employed to finish the
work on time?



Please give step by step explanation
And I will mark you as a brainlist

Make sure that the answer is 40 mens

Answer 1

Answer:

40

Step-by-step explanation:

TOTAL DAYS GIVEN = 30

TO DIG CANAL OF 3 KM IN 10 DAYS 80 MEN WHERE REQUIRED

TO BUILD 1 KM IN 1 DAY MEN REQ= MEN EMPLOYx DAYS/LENGTH OF CANAL BUILT

                                = 80x10/3

MEN REQ TO BUILD EXTRA 9 KM = TO BUILD 1 KM IN 1 DAY MENx LENGTH REM/DAYS REMAINING

                                                            = 800x 9/20x3

                                                             = 120

NO OF MORE MEN NEED TO BE EMPLOYED = 120-80 = 40