The average age of a 10-person committee increases by 3 when three men aged 35 years, 48 years and 49 years are substituted by three women. The average age (in years) of the three women is:
The number of students in three sections of Grade 10 in a school are in the proportion 3:5:8. If 15, 30 and 15 more students are admitted in the three sections respectively, the new proportion becomes 4:7:9. The total number of students before the new admissions is:
The price of a semi-precious stone weighing 48 g, is ₹2,30,400. It is broken into two pieces whose weights are in the ratio of 5:7. If the price is proportional to the square of the weight, then the loss (in ₹) incurred, is:
An employee gets two successive increments in his salary, as a result of which his salary becomes 2.5 times the initial salary. What was his first percentage increment, if the second percentage increment was 4 times as high as the first?
General Awareness
After full moon day, every night the size of the bright part of the moon appears to become thinner and thinner. On the fifteenth day, the moon is not visible. This day is known as:
