How many times are the hands of a clock at right angle in a day?
The sum of the sides and diagonals of a polygon is 78. What is the number of sides in the polygon?
The ratio of the present ages of P and Q is 3:4. 5 years ago, the ratio of their ages was 5:7. Find their present ages.
The sum of three numbers is 98. If the ratio of the first to the second is 2:3 and that of the second to the third is 5:8, then the second number is:
In a mixture of 60 liters, the ratio of milk and water 2: 1. If this ratio is to be 1: 2, then the quantity of water to be further added is:
A bag contains six blue shirts, three white shirts, and four green shirts. If 2 shirts are drawn at random, what is the probability that they are not of the same color?
A and B enter into partnership with capital as 7:9. At the end of 8 months, A withdraws. If they receive the profits in the ratio of 8:9 find how long B's capital was used?
In a management entrance test, a student scored 2 marks for every correct answer and loses 0.5 marks for every wrong answer. If the student attempted all 100 questions and scored 120 marks, how many questions did the student answer correctly?
The seats for Maths, Physics and Biology are in the ratio of 5 : 7 : 8 respectively. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the respective ratio of the increased seats?
In a certain batch, 240 candidates are male and 200 candidates are female. 50% of the male and 40% of female candidates are law candidates. 40% of male law candidates and 50% of female law candidates passed the exam. What percentage of law candidates passed the exam?