SOLUTION: If Hector does a job in 12 hours and with the help of Sam they can do it together in 5 hours, how long would it take Destiny to do it alone?

SOLUTION: If Hector does a job in 12 hours and with the help of Sam they can do it together in 5 hours, how long would it take Destiny to do it alone?

Algebra.Com

Question 1100666: If Hector does a job in 12 hours and with the help of Sam they can do it together in 5 hours, how long would it take Destiny to do it alone?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
Hector and Sam equal 5 hours for one job, or, 1/5th of a job per hour. Hector, alone,does 1/12th a job per hour. So Sam equals
1/5-1/12=12-5/60, or 7/60th job per hour
1 /(7/60)=60/7 hours for Sam to do the job alone
☺☺☺☺
RELATED QUESTIONS
jack can clean the house in 12 hours, sam can do the same job in 9 hours. How long would... (answered by ewatrrr)

if David does a job in 78 hours and with the help of Jacqueline they can do it together... (answered by josmiceli)

If Keegan does a job in 9 hours and with the help of Caitlyn they can do it together in 6 (answered by Alan3354,josgarithmetic,ikleyn)

Jerry and Sam are laying a hardwood floor. Working alone, Jerry can do the job in 20... (answered by josmiceli)

If A does a job in 16 hours and B does the same job in 12 hours, if B and C do the job... (answered by josmiceli,richwmiller)

Chasity can do a job in 12 hours. If she works with Kyle, together they can get the job... (answered by josgarithmetic,MathTherapy)

Pete can do a job in 4 hours less than Sam can. Working together,they can complete the... (answered by josmiceli)

Sam can unload a truck of furniture in 6 hours. Working together, it takes Sam and... (answered by richwmiller)

Sam can do a job in X hours. Denise can do the same job in X+2 hours, How long will it... (answered by richwmiller)