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27.81 + 43.74 - 64.37 = ?
270 candidates appeared for an examination, of which 252 passed. The pass percentage is
3 L water is taken out from vessel full of water and substituted by pure milk. This process is repeated two more times. Finally, the ratio of milk and water in the solution becomes 1728 : 27. Find the volume of the original solution.
3 men or 8 women can do a piece of work in 17 days. How many days will 2 men and 6 women together take to finish the same work?
3 men, 4 women and 6 children can complete a work in 7 days. A woman does double the work a man does and a child does half the work a man does. How many women alone can complete this work in 7 days
3 persons undertake to complete a piece of work for $1,200. The first person can complete the work in 8 days, second person in 12 days and third person in 16 days. They complete the work with the help of a fourth person in 3 days. What does the fourth person get?
3 years ago the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:
3 years ago, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is same today. The present age of the baby is
3/4 : 1/2 :: 27y : ? Solve this
30% of a number when subtracted from 91, gives the number itself. Find the number.
