1.The difference between 28% and 42% of a number is 210. What is 59% of this number? (3)
1. 900
2. 420
3.885
4.None of these
2.The LCM of 7-3 , 7-13, 7-11, 7-18 is (3)
1.7-18
2.7-13
3.7-3
4.7-11
3.By selling oranges at 32 a rupee a man loses 40%. How many for a rupee should he sell in order to gain 20%. (1)
1.16
2.32
3.48
4.52
4. The simple Interest on a sum of money will be Rs. 600 after 10 years. If the principal is trebled after 5 year, the total interest at the end of 10 years will be. (4)
1.900
2.600
3.1800
4.1200
5. The average age of A and B is 20 years. If C were to replace A, the average would be 19 and if C were to replace B, the average would be 21. What are the ages of A, B and C. (1)
1.22, 18, 20
2.18, 22, 20
3.22, 50, 18
4.18, 20, 22