The difference between simple and compound interests of a sum of money for two years at 4% per annum is Rs.20. Find the sum.
The average of 9 numbers is 50. The average of first four is 52 and the average of last four is 49. What is the fifth number.
In two similar triangles ABC and DEF, AC =10cm. and DF = 8 cm. Find the ratio of their areas.
At what time Vishnu will reach his destination if he has started at 10a.m and travels half the distance at a speed of 10 km/hr.and the other half at a speed of 20 km/hr by assuming the distance between
If the area of a hall is 1000sq.metres, what is the length in metres?
Damu loses 20% by selling a bicycle for Rs.480. If he has to make a profit of 20 % he should sell it for