9. 25 students each paid $6.50 to go to the museum. How much did they all pay together?

They paid 247 dollar.

Step-by-step explanation:

They paid 247 dollar

Step-by-step explanation:

1 student paid 6.50

25 students paid x

1/25 = 6.50 / x                     Cross multiply

x = 25 * 6.50

x = 162.50  

The total for all 25 came to 162.50 dollars.

x-150=475   x=625

step-by-step explanation:

if the bike after the sale ($150) is $475 then just simply add 150 to 475.