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HOW DO YOU SOLVE THIS MATH WORD PROBLEM?
Bob and Ken are painting a room. If Bob paints the room alone, he can finish the job in 4 hours. If Ken paints it alone, he can finish the job in 6 hours. How long will it take them to paint it together? The correct answer is 2 hours and 24 minutes.
2 Answers
- Engr. RonaldLv 72 weeks ago
let t - time of combined work of Bob and Ken.
1/4 + 1/6 = 1/t
5/12 = 1/t
5t = 12
t = 2.4 hours. or 2 hours and 24 minutes ..... Answer//
- ?Lv 72 weeks ago
Bob and Ken are painting a room.
If Bob paints the room alone,
he can finish the job in 4 hours.
If Ken paints it alone, he can finish the job in 6 hours.
How long will it take them to paint it together?
1/x = 1/4 + 1/6 = 5/12, x = 2.4
The answer is 2 hours and 24 minutes.
