A group of men decided to do a job in 5 days, but 10 men kept dropping out every day. If the job was completed at the end of the 6 t h day, find the initial number of men who had signed up for the work.

 A group of men decided to do a job in 5 days, but 10 men kept dropping out every day. If the job was completed at the end of the 

$6^{th}$ day, find the initial number of men who had signed up for the work.

	A	120
	B	150
	C	160
	D	180

Solution : B