Posted by **Renee** on Sunday, October 26, 2008 at 12:24am.

Estimate how long it takes you to complete a task of your choice (house cleaning, mowing, etc.) in a given week. Suppose that Joe is slower than you at the given task and takes three times as long as you do. If you work together, how long would it take you to complete the task It take me only 1 hour to mow the lawn where it takes my sister 2hours, how long would it take both of us to do it together to complete the task

- Radical and Rational exponents -
**Reiny**, Sunday, October 26, 2008 at 8:50am
You have just asked two different questions in the same paragraph.

I will do the last one,

then you follow my method to do the first one.

your time for lawn is 1 hour

sister's time to do the same lawn is 2 hours

your combined rate would be lawn/1 + lawn/2 = 3/2 lawn/hour

so time working together = lawn/[lawn/(3/2)]

= 2/3 hours , (lawn will cancel)

## Answer this Question

## Related Questions

- MATH - An application of a rational function is T = (AB)/(A+B), which gives the...
- College Algebra - Part 1: Using the Library, web resources, and/or other ...
- Math - Use rational exponents to simplify the radical. If rational exponents ...
- Math - Use rational exponents to simplify the radical. If rational exponents ...
- math - Why is it important to simplify radical expressions before adding or ...
- College Algebra - I have a few more questions that I'm not understanding. Its ...
- PreCalculus - Suppose that a polynomial function of degree 5 with rational ...
- Math - The time it takes to clean the house varies inversely with the number of ...
- rational exponents - Express cube root 27x^4y^6 using rational exponents (27x^4y...
- math - one task takes 7 mins second task takes 12 min third task takes 21 nin ...