Solve by elimination: x + 9y = 8 -6X - 9y = -3
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
Please see attached picture for full solution.
Answer:
Step-by-step explanation:
The average is 7.5 hours of sleep each night.
There are 365 nights in 1 year.
Jayden's work rate is twice Chandra's work rate, and, the rooms cleaned
by Jayden is twice the number of rooms cleaned by Chandra.
Response:
- <u>Jayden cleans 8 rooms while Chandra cleans 4 rooms</u>
Number of rooms in the house = 12
The time that Jayden takes to clean the house = 6 hours
Time that it takes Chandra to clean the house by herself = 12 hours
Time it takes both of them to clean the house = 4 hours
Required:
The number of rooms that Jayden clean and the number of rooms that
Chandra cleans when they work together.
Solution:
Given that the time it takes Jayden to clean the house is half the time
taken by Chandra.
Therefore;
The number of rooms Jayden cleans in 4 hours is twice the number of rooms cleaned by Chandra, which gives;
Ratio of the number of rooms cleaned by Jayden to the number cleaned by Chandra is 2 : 1
Total number of rooms cleaned = 12
The number of rooms cleaned by Chandra = 12 - 8 = <u>4 rooms</u>
Learn more about ratios here: