If it takes Alex 9 hours to beat Kingdom Hearts and his friend John Completes the game in 3 hours, how long will it take for them to beat the game if they play together.
Write a rational equation based upon the word problem you created.
1/9 +1/3=1/x

Question

If it takes Alex 9 hours to beat Kingdom Hearts and his friend John Completes the game in 3 hours, how long will it take for them to beat the game if they play together.
Write a rational equation based upon the word problem you created.
1/9 +1/3=1/x

jim_thompson5910 · Answer

Multiply every term by the LCD 9x to clear out the fractions.

anonymous · Answer

I get 9/4

jim_thompson5910 · Answer

good, x = 9/4 is the correct answer

jim_thompson5910 · Answer

you can also say x = 2.25 

so it will take them 2.25 hours (2 hours 15 minutes) to beat the game together.

jim_thompson5910 · Answer

since 9/4 = 2.25

anonymous · Answer

Wow god bless you sir!