A carpenter can do a job in eight hours. His assistant can do the same job in ten hours. How long would it take them to do the j
1 answer:
Answer:
it will take them about 4.44 hours to complete the job when they work together
Step-by-step explanation:
If carpenter B can complete the job in 8 hours, then the portion (fraction) of the job done in the unit of time (one hour) by this carpenter is 1/8
The assistant A can complete the same job in 10 hours, so the fraction of the job done by him in one hour is: 1/10
When they work together, we don't know what time it will take (we name it "x" hours). Therefore the fraction of the job dome in these x hours would be: 1/x
Now we can set the equation that says that the fraction of the job done by B in the unit of time plus the fraction done by A should equal the fraction completed when they work together:
Therefore, it will take them about 4.44 hours to complete the job when they work together.
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Hello!
**Process pictured below**
When dividing, find how many times the first time in the divisor (2x + 3) fits into the first time of the dividend (2x³ + 5x² - 3x - 5). In this step, it fits x² times.
Multiply x² by the terms in the divisor and subtract from the dividend. Bring down the next term in the dividend to continue the process.
Repeat this step until you reach the last number. In this case, there was a remainder of 4. In order to write the remainder, you must express it over the divisor which makes it 4 / 2x + 3.
