Machines a and b always operate independently and at their respective constant rates. when working alone, machine a can fill a production lot in 5 hours, and machine b can fill the same lot in x hours. when the two machines operate simultaneously to fill the production lot, it takes them 2 hours to complete the job. what is the value of x ?

The value of x is hours.

Step-by-step explanation:

Machine A = 5 hours

Machine B = x hours

Machine A and B = 2 hours

Using the formula:

where:

T is the time spend by both machine

A is the time spend by machine A

B is the time spend by machine B

Let multiply the entire problem by the common denominator (5B)

2x + 10 = 5x

Collect the like terms

10 = 5x - 2x

10 = 3x

3x = 10

Divide both side by the coefficient of x (3)

hours.

Therefore, Machine B will fill the same lot in hours.

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation:

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart