Question
Two trains depart from the same station. The first train
departs at 8:00 A.M., traveling at a speed of 60 km/h. Two hours later, at 10:00 A.M., the second train leaves the station, traveling at a faster speed of 72 km/h. At what time will the second train catch up to the first train?Solution
We can see that the first train leaves 2 hours before the second train. So, distance travelled in 2 hours by the first train = 2 X 60 = 120 km So, time taken by the two trains to meet = 120 ÷ (72 - 60) = 10 hours So, the second train will meet the first train at 10:00 AM + 10 hours = 8:00 P.M.
The total number of students in class X and Y is 72. The number of students in X is 40% more than that in Y. The average marks of students in Y are 50% ...
The average temperature for a week is recorded as 35.4°C. The difference between the highest and lowest temperatures during the week is 30°C. Addition...
The average of five even numbers is 62. If we replace two of these even numbers, 84 and 92, with a single even number X, the new average decreases by 4....
The average salary of 12 employees in a company is Rs.45,000 per year. When two new employees, Alice and Bob, join the company, their salaries being in ...
The average age of A and B is 15 years. If A is to be replaced by C, the average would be 14 years. The average age of C and A is 16 years. Find the age...
In a tournament, the average score of eight batsmen in the Chennai team is 80. If the highest three scores are not considered, th...
Average of 8 numbers is 80. If average of first four and last two numbers is 80 and 60, respectively then find the fifth number given that ratio of fift...
A batsman had an average of 39 runs in 35 innings. In his next 5 innings, he scored 100, 85, 90, 80, and 60. What is his updated average?
Rs. 5040 was distributed among W, X, Y, and Z in the ratio 2:5:4:3 respectively. After that, X gave an amount equal to 80% of the average of W and Z's i...
The average weight of 70 notebooks kept in a box is 7 kg. When a new notebook is placed in the box, then the average is 7.1kg. Specify the weight of the...
Relevant for Exams:
