Quantitative Aptitude - Arithmetic Ability Questions

If a person walks at 12 km/hr instead of 10 km/hr, he would have walked 1 km more in the same time. What is the actual distance (in kms) travelled by him at 10 km/hr in the same time?

A and B together do a job in 6.75 days and A could do the job in 9 days if he worked alone. How many days would B take to do the job if he worked alone?

A box weighs 8.5 kg when full of sand and weighs 5.5 kg when it is half filled with sand . Weight of the empty box is

Slope of the side DA of the rectangle ABCD is 5/3. What is the slope of the side AB?

The expression 52n –23n has a factor?

The sum of the present ages of two cousins is 46 years. Eight years ago, the elder one was twice as old as the younger one. What is the present age of the elder cousin?

Peter belongs to Town A and Paul belongs to Town B. They start their journeys towards each others towns following the same route at the same time. They meet somewhere on the way and continue with their journeys. After meeting Paul, Peter takes another 13.5 hrs to reach his destination while Paul takes another 6hrs to reach Peter's town. If Peter travelled at the speed of 30 kmph, what was Paul's speed in kmph?

The simple interest accrued on a sum of money at the end of four years is 1/5th of its principal. What is the rate of interest per annum?