Samuel can type nearly 40 words per minute. Use this information to find the number of hours it would take him to type 2.5x10 to the 5th power

10 to the 5th power is 100,000.

So, 2.5 x 100,000 = 250,000

Since Samuel can type 40 words per minute, do 250,000 : 40 = 6250

Since there are 60 minutes in an hour and Samuel types 40 words per minute, multiply 40 x 60 until you get close to 6250.