Thursday

August 21, 2014

August 21, 2014

Posted by **simon** on Thursday, March 8, 2012 at 2:51am.

- math -
**MathMate**, Thursday, March 8, 2012 at 9:41amLet x and y be the two speeds, x>y.

First part:

after 3 hours of driving towards each other, the distance is reduced from 230 to 20, so

3(x+y)=230-20

x+y=70

Speed of one is 10 km less than the other:

x-y=10

We have a sum and difference problem where the solution is

x=(sum+difference)/2=40

y=(sum=difference)/2=30

- math -
**Henry**, Friday, March 9, 2012 at 9:17ampot it.

**Related Questions**

Math - Plz help me to solve this question The distance between two stations A & ...

math - the distance between two stations is 300km. two trains start ...

maths - the distance between two stations is 340 km two trains start ...

Math - The distance btwn two stations A and B is 230km.two motrcyclst start ...

math - distance = rate x time or d = r*t car traveling 40 mi/hr goes 40 mi/hr x ...

calculus - A plane that is flying horizontally at an altitude of 6 kilometers ...

Calc - A plane that is flying horizontally at an altitude of 6 kilometers and a ...

AP Physics - Two particles, each of mass m and speed v, travel in opposite ...

please help - area of a dodecagon? - The distance between two opposite vertices ...

math - A map distance of 5 inches represents 200 miles of actual distance ...