Question

Justin and Jason are building a fort. They need 250 pieces of wood. Justin can hammer 10 1/4 pieces of wood an hour. Jason can hammer 9 1/2 in one hour. How many hours will it take them to finish the fort?

Answer 1

Answer: 12 hours

Explanation:

1.) add 10 1/4 and 9 1/3. You’ll get 19.75

2.) divide 250 by 19.75. You’ll get something close to 12.6582278481 if you use appendix zeros.

3.) round 12.6582278481 to the nearest whole number. It will be 12. Hope this helps :)

Answer 2

`(10 * (1)/(4) * x) + (9 * (1)/(2) * x) = 250 \\ (5)/(2) x + (9)/(2) x = 250 \\ (14)/(2) x = 250 \\ 7x = 250 \\ x = (250)/(7) \\ x = 35.7`
35.7 hours