Liam is setting up folding chairs for a meeting. If he arranges the chairs in 9 rows of the same length, he has 7 chairs left over. If he arranges the chairs in 7 rows of that same length, he has 17 left over. How many chairs does Liam have?

Liam has 52 chairs.

Step-by-step explanation:

Let x= Number of chairs in each row.

If he arranges the chairs in 9 rows and 7 chairs left over.

Then total chairs = 9x+7

If he arranges the chairs in 7 rows and 17 left over.

Total chairs = 7x+17

Now,

Total chairs = 9(5)+7 = 45+7= 52

Hence, Liam has 52 chairs.

the mean and mad

step-by-step explanation:

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.