DIRECTIONS : What will come in place of the question mark (?) in the following questions?

45% of 6400 - ? % of 4800 = 17 × 29 – 157

DIRECTIONS: Find the missing term in the following series.

46, 57, 81, 120, ?, 251

A vessel contains 16 litres solution of wine having 60% alcohol. How many litres of water is to be added to this solution, so that alcohol becomes 40% in the resultant solution?

Area of a square P is 1024 m². Side of square Q is 4 m more than the side of the square P. What is 60% of the difference between their perimeters?

The average age of all the seven children in a family is 10 years. If the age of the eldest person of the family is included, then the average age becomes 19 years. What is the age of the eldest person?

Five years ago, the ages of Bali and Geeta were in the ratio of 3 : 4. Ten years hence the respective ratio of their ages will be 6 : 7. What is the difference between their present ages?

Three sides of a triangular field are 7 meters, 25 meters and 24 meters. If it is to be excavated and leveled at the rate of Rs. 130 per square meter, then what is the total cost of the work?

A bowl contains 4 red balls, 3 blue balls and 5 yellow balls. If three balls are drawn at random, the probability that the balls drawn are of different colors is?

A boat travelled 40 km downstream and 20 km upstream in 6 hours. The boat travelled another 56 km downstream and 34 km upstream in 9 hours. What is the speed of the water?

A and B invested Rs.40,000 and Rs.50,000 respectively in a business. B left the business with his money after 4 months and after 2 more months he rejoins the business with a capital of Rs.60,000. At the end of the first year they earned a profit of Rs. 1,560. What is the share of A in the profit?