For the following questions answer them individually
In an examination 73%of the candidates passed in quantitative aptitude test, 70% passed in General awareness and 64% passedin both. If 6300 failed in both subjects the total number of examinees were
A man spends 75% of his income. His income increases by 20% and his expenditure also increases by 10%. Find the percentage increase in his savings.
On river, Q is the mid-point between two points P and R on the same bank ofthe river. A boat can go from P to Q and back in 12 hours, and from P to R in 16 hours 40 min. How long would it take to go from R to P ?
A car can finish a certain journey in 10 hours at a speed of 42 kmph. In order to cover the same distance in 7 hours, the speed of the car (km/h) must be increased by
A man travels 450 km to his home partly by train and partly by car. He takes 8 hrs 40 minsif he travels 240 km bytrain and rest by car. He takes 20 mins moreif he travels 180 km by train and the rest by car. The speed of the car in km/hr is
A train 'B' speeding with 100 kmph crosses another train C, running in the same direction, in 2 mins. If the length of the train B and C be 150m and 250m respectively, what is the speed of the train C (in kmph) ?
The compound interest on Rs. 30,000 at 7%per annum for n years is Rs. 4347. The value of n is
If A borrowed Rs. P at x% and B borrowed Rs. Q (>P) at y% per annum at simple interest at the same time, then the amountof their debts will be equal after
A man invested a sum of money at compoundinterest. It amounted to Rs. 2420 in 2 years and to Rs. 2662 in 3 years. Find the sum.
if a sum of money becomes 4000 in 2 yrs and 5500 in 4 yrs 6 months at the same rate of simple interest per annum. Then the rate of simple interest is
