1. A sum of rs.850 is divided into three parts, proportional to 1/3:2/5:3/7 find the value of the first part?
D. Rs. 243.85
2.if an amount gets doubles in 6years at simple intrest, then is how many years will it become 4 times?
A. 18 years
B. 12 years
C. 10 years
D. 15 years
3. What is the fourth proportional to 3,9,21,? Which number replaces the question mark?
4. A shopkeeper doubles the selling price as a result profit triples. What is the profit percentage of the shopkeeper?
5. A train wheel of diameter of 49cm travels a distance of 154km. How many numbers of revolutions does the wheel make?