When two trains cross each other, they cover distance equal to the sum of their lengths with relative speed. Let's take length of each train = x So, total length of both trains = 2x Relative speed = (115 – 55) × (5/18) = 50/3 m/sec. ∴ Total length = Time × Relative speed ⇒ 2x = (30 × 50)/3 ⇒ x = 250 m
In a cricket match the captain of one of a team scored 25 runs more than the average runs scored by the remaining 8 batsmen of that team who batted in t...
The average weight of 4 persons is 46 kg. The heaviest person’s weight is 28 kg more than the lightest person’s weight. If the average weight of the...
The average wage of a group of 25 labourers is Rs. 470. If 4 persons receiving average wage of Rs. 350 leave the group and 2 persons receiving average w...
The average of the first 7 non-zero multiples of 18 is:
The average height of each person in group 'G' having 28 people is 12 cm less than the average height of each person in group 'H' having 24 people. If t...
The average salary of 28 employees is recorded as ₹ 16,584. If the salary of an employee with value ₹14,526 was entered Wrongly as ₹ 41,238, then ...
The average score of a class of boys and girls in examination is X. The ratio of boys and girls in the class is 4:3. If the average score of the boys (X...
The average of 10 observations is 60. It was realized later that an observation was misread as 39 in place of 93. The correct average is:
The average weight of a group of 20 boys is 52 kg. If the total weight of a group of 14 girls is 30% less than the total weight o...
In a company, the average age of 40 employees is 20 years. When the ages of two managers, one 'a' years old and the other 'a + 10' years old, are includ...
