NOTE:-AFTER CANCELLING OF 10 DAYS,THE CAPACITY OF WORK DONE IS CALCULATED OF 200 DAYS BETWEEN THE 15 MEN AND 15 ADDITIONAL MEN OF DOUBLE EFFICIENCY.
SO, 15MEN
210 DAYS
1MEN
210× 15 DAYS
AT THE END OF 10 DAYS 1 MEN HAVE TO DO WORK FOR
(210-10)×15 DAYS
THEN, 15 ADDITIONAL MEN OF DOUBLE EFFICIENCY MEANS THEY CAN DO THE WORK OF 15×2 MEN’S WORK.
SO, THE TOTAL MEN AT THE END OF 10 BECOMES
15+15×2=45 MEN.
LET’S COMPARE THE CAPACITY BETWEEN 15 MEN AND 45 MEN;
SO,15MEN AT THE END OF 10 DAYS WILL DO WORK FOR 200 DAYS;
45 MEN WILL DO
(200×15)/45 DAYS=66 ×2/3 DAYS
HENCE,TOTAL DAYS TAKEN TO COMPLETE THE WORK =(10+66×2/3) DAYS=76 2/3 DAYS ………………(ANS)
