Posted by **saila** on Saturday, May 19, 2012 at 6:02am.

1. a first train travelling at x km an hour takes t hour less to travel y km than a slower one takes to travel z km . find the different between their speed

2. a man has one kind of coffee at 'a' paise

per kg and another at 'b' paise per kg how much of each must take to form a mixture of (a0b)kg which b can sell at c paise /kg without loss.

- maths -
**Reiny**, Saturday, May 19, 2012 at 8:17am
I suggest you replace the variables with actual numbers and solve that problem.

Then repeat the same steps using the variables in the given question.

e.g.

A first train travelling at 60 km an hour takes 2 hour less to travel 300 km than a slower one takes to travel 150 km . find the different between their speed

time for 1st train = 300/60

time for 2nd train = 300/60 + 2

speed of 2nd train = 150/(300/60 + 2)

difference in speeds = 60 - 150/(300/60 + 2)

( I purposely left the arithmetic open, so that you can see where the variables go)

in the second question, I have no idea what (a0b)kg means

## Answer this Question

## Related Questions

- math - I need help to get started with writing the equation for the following ...
- algebra1 - the speed of train A is 8mph slower than the speed of train B. Train ...
- algebra - the speed of train A is 8 mph slower than the speed of train B. Train ...
- algebra 2 - I don't know how to do this the speed of train A is 18mph slower ...
- College Algebra 2 - The speed of train A is 16 mph slower than train B. Train A ...
- math - the speed of a train a is 6 mph slower than the speed of train b. train a...
- Algebra - The speed of train A is 6 mph slower than the speed of train B. Train ...
- math - The speed of a train A is 8mph slower than the speed of train B. Train A ...
- algebra - The speed of train A is 6 mph slower than the speed of train B. Train ...
- Algebra 2 - It takes You, riding a motorcycle, 2 hours less time to travel 60 ...