Wednesday

October 22, 2014

October 22, 2014

Posted by **Jose** on Wednesday, November 7, 2012 at 9:24pm.

- math -
**Reiny**, Wednesday, November 7, 2012 at 10:01pmIt would take them 70 minutes to wash the whole car working together, working at the same rate.

Jack did half the car by himself , and that would have taken him 70 minutes working alone

so that leaves half the car to be washed by both working together.

This will obviously take them 35 minutes.

so add 70 min + 35 min to 2:30 ----> 4:15 pm

**Answer this Question**

**Related Questions**

math - A group of students have volunteered for the student council car wash. ...

algebra - frank can wash the car in 2/3 the time his younger brother,joe,can ...

Algebra - Evan washes two types of vehicles. It takes him 30 minutes to wash a ...

physics - Jack is driving with a pail of water along a straight pathway at a ...

Physics - Jack is driving with a pail of water along a straight pathway at a ...

Physics - Jack is driving with a pail of water along a straight pathway at a ...

Math - During a 220 meter relay race, Jack begins at the starting line and runs ...

math - Megan and Sam together take 12 minutes to wash a car. Washing the car by ...

Physics - Jack and Jill are skating. Jill has a mass of 50 kg, Jack has a mass ...

Critical Thinking - Need help with identifying argument and reasoning for Having...