exam Maths Puzzle Numerical Ability

The speed of train A is 12 km/h slower than the speed of train B. Train A travels 230 km in the same time it takes train B to travel 290 km. Find the speed of each.

Read Solution (Total 0)

exam Other Question

The start-up cost for producing widgets is $449, and each widget costs $91 to produce. Write the function relating x (number of widgets produced) with C(x) or the cost for producing that many widgets.

Thank you. How to show that the equation x^2 + px -q^2 = 0 are real for any real numbers p & q? Thanks