Exam question --easy 10 points if you can show me the work?

Question

If production line A can produce 12.5 units in an hour and production line B can produce
15.25 units in an hour, how long will the production line A have to work to produce the
same amount of units as line B?
the answer is 1.22 hours..
If you can show me the work ,and how you arrived at the answer ,you would help me out tremendously . It is a sample question that will be on an exam for employment that I am taking on Thursday ..thanks in advance..and 10 points for the 1st correct answerer.

Answer 1

Step #1
Ask: how long does it take Production Line A to build 1 unit?
12.5 units divided by 60 minutes = 4.8 minutes

So it takes the 4.8 minutes to build 1 unit.

Step #2
Ask: how long will it take Productio Line A to build 15.25 units?

Well, they can build one in 4.8 minutes so, 15.25 units times
4.8 minutes = 73.2

Step #3
Now convert 73.2 minutes into hours and minutes.

73.2 minutes divided by 60 minutes = 1.22 hours

Answer 2

assume for 1 hour , b produces 15.25 units , how many hours will a need to produce 15.25 units?you just divide 15.25/12.5 which is equal to 1.22 hours.
Think of it this way, if a produces 5 units in 1 hour and B produces 10 units in 1 hour. How many hours it takesA to produce the same amount as B.?
You just divide 10/5 , you got 2...hours

Answer 3

Line A will have to work longer, ie time has to be increased.
15.25 units<-----> 1 hour
12.5 units<-----> 1 x 15.25 / 12.5 hours
= 3.05 / 2 . 5 hours
= 12.20 / 10 hours
= 1.22 hours

Answer 4

STEP NO. 1

Firstly, solve how long does it take production line A to build 1 unit:
12.5 units divided by 60 minutes = 4.8 minutes

So, it takes the 4.8 minutes to build 1 unit

STEP NO. 2

Then, solve how long will it take production line A to build 15.25 units. They can build one in 4.8 minutes:

So, 15.25 units x 4.8 minutes = 73.2 minutes

STEP NO. 3

Lastly, convert 73.2 minutes into hours and minutes:
73.2 minutes divided by 60 minutes = 1.22 hours

Answer 5

A=12.5u/h
B=15.25u/h
All you have to do is divide production line B's production=> 15.25
By production line A's production=> 12.5

15.25/12.5= 1.22
There you go!!!

Answer 6

A=12.5u/h
B=15.25u/h
All you have to do is divide production line B's production=> 15.25
By production line A's production=> 12.5

15.25/12.5= 1.22
There you go!!!

Answer 7

Don't you just have to divide 15.25 by 12.5... That's what I did and it came to 1.22 So I guess:

15.25/12.5=1.22

Answer 8

Easy.... 12.5 (units) Divide by 60(minutes) =.2083333(unit/min)
15.25(units) divide by 60(minutes) =.2541666(unit/min)
Divide 15.25 by the smaller amount .2083333 =73.200011
divide by 60(Min) =1.22

Answer 9

A line=12.5units
B line=15.25units

15.25units
-12.5units=1.22

because the difference in the two lines is 1.22units

help at all?

Answer 10

this is very simple ....

if in 1 hour you make 12.5 then in how many hours can you make 15.25

cross multiplication

1 ---------> 12.5
? ---------> 15.25

therefore

15.25/12.5 = 1.22

:D