baseballjay20oyr38t baseballjay20oyr38t
  • 01-11-2017
  • Mathematics
contestada

one maid can clean the house three times faster than another. Working together they can clean the entire house in 3 hours. How long would it take the faster maid cleaning alone?

Respuesta :

EchoFlower
EchoFlower EchoFlower
  • 01-11-2017
Faster maid DATA:
time = x hr/job ; rate = 1/x job/jhr
Slower maid DATA:
time = 3x hr/job ; rate = 1/3x job/hr
Together DATA:
time = 3 hr/job ; rate = 1/3 job/hr
Equation:
rate + rate = together rate
1/x + 1/3x = 1/3
Multiply thru by 3x to get:
3 + 1 = x
x = 4 hrs (time for the faster maid to do the job)
Answer Link

Otras preguntas

How should you read this passage to answer a general question? Alzheimer's Disease When you encounter a passage comprehension question - or set of questions -
Is a model expected to be 100% accurate? Why?
Which animal lacks an amnion?
Which jazz musician is regarded as the most innovative?
Describe a procedure to separate a mixture of sugar black pepper and pebbles
A survey of 120 middle schools showed that 30% have a foreign language program. how many schools have have a foreign language program
20 points math hurry help fast!!
What is proportion setup for 380 raisins in a box and uses 5 per gingerbread man. needing to set up to find out how many dozens i can make?
Which word is used to name the bold number? 81÷3d A.product B.minuets C.divideos D.divisor
The military leader who joined the forces with Crassus and pompey to dominate rome was