Gianna and Matthew work at a dry cleaners ironing shirts. Gianna can iron 30 shirts
per hour, and Matthew can iron 10 shirts per hour. Gianna and Matthew worked a
combined 11 hours and ironed 230 shirts. Determine the number of hours Gianna
worked and the number of hours Matthew worked.

Gianna worked 6 hours and Matthew worked 5 hours.

Step-by-step explanation:

Let be "g" the number of hours Gianna worked and "m" the number of hours that Matthew worked.

Using the information given in the exercise, set up a System of equations:

You can use the Elimination Method to solve the System of equations:

1. You can multiply the first equation by -10.

2. Then you must add both equations.

3. You must solve for "g".

Then:

 4. Finally, you need to substute the value of "g" into any original equation and solve for "m" in order to find its value:

stop using this to cheat on home work

step-by-step explanation:

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not enough information

step-by-step explanation:

we cannot know this, because the other students could have handed out 10 flyers, or they could have handed out 100. one way, the mean would go up, and another way, the mean would go down.