Sunday

September 21, 2014

September 21, 2014

Posted by **Becky** on Monday, November 19, 2012 at 7:16pm.

- Math -
**Brenda**, Monday, November 19, 2012 at 7:26pm(4.5 km/hr x X) + (3.5 km/hr x Y) = 40

Where X is the time there and Y is your time back.

X = (40 - 3.5 Y) / 4.5

= 8.88 - 0.77Y

Now plug X back into your original eqn and solve for Y:

4.5 (8.88 - 0.77Y) + 3.5Y = 40

Got it?

**Answer this Question**

**Related Questions**

math - Two friends worked out on treadmills at the gym. •Alden walked 2 miles in...

Math - Practice adding and subtracting fractions. 1/ Jill's friends met at her ...

English - Choose the word modified by the adjective clause in the sentence below...

4th grade math - In the school walkathon, Bev walked 2 1/5 miles, Dennis walked ...

3rd grade math - The hike back to jill's house took an hour. they walked for 1/2...

physics - Mary walked north from her home to Sheila's home, which is 4.0 ...

Math - a man walked for some distance at 8km/h and for an equal distance at 5km/...

math - Roberto has walked 3 miles almost every day in the past four years, with ...

Math - Write an expression for the number of miles that Chris walked and an ...

fractions - Annie walked her dog 2 1/4 miles from her house to the dog park and ...