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.

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls

1,8,15,22,29,36,43,50

step-by-step explanation: