Time and Work

Q.

It takes 5 men 5 hours to build 5 cars. How many hours does it take for 20 men to build 20 cars?

1. 5 Hours

2. 1 Hour

3. 4 Hours

4. 20 Hours

Q. If $12$ men or $18$ women can complete a piece of work in $7$ days , then in how many days can $4$ men and $8$ women complete the same work ?

1. $9$ days
2. $12$ days
3. $6$ days
4. $7$ days

Q. X and Y can do a piece of work in 72 days. Y and Z can do it in 120 days. X and Z can do it in 90 days. How many days does it take if all the three can work together?

1. 60 days
2. 80 days
3. 150 days
4. 100 days
   

Q. $36$ men can do a piece of work in $7$. How much men will do the same work in $42$ days?

Q. A, B and C can do piece of work in $8$days, $12$days and $24$days respectively.How many days will they together do it?

Q. A, B and C can complete a work in $6,12$, and $18$ days respectively. A and B started the work and C joined them after one day.B left $2$ days before the work complete.Find number of days they all work together.

Q. The left column of the chart lists the lengths of input pieces of ribbon. Stretching machines are listed across the top. The other countries are the outputs for sending the input ribbon from that row through the machine from that column. Copy and complete the chart.

Input Length			Machine
	$x2$
	$1$	$5$
$3$			$15$
	$14$		$35$