Question
Two cars X and Y start from two places A and B
respectively which are 700 km apart at 9 a.m. Both the cars run at an average speed of 60 km/hr towards each other. Car X stops at 10 a.m. and again starts at 11 a.m. While the other car Y continues to run without stopping. When do the two cars cross each other?Solution
Till 11 a.m. Dist. Covered by X = 60 km and Till 11 a.m. Dist. Covered by Y = 120 km Remaining distance to be covered at 11 a.m. = 700 â 180 = 520 km Relative speed of X and Y = 120 Km / hr â´ Time taken = 520/120 =13/3 hrs. =  4 hrs. 20 min. â´ Two cars will cross each other at 3.20 p.m.
- Find the fourth proportion of (3k), (4k), and (6k). (Note: 'k' is the smallest two-digit prime number.)
The ratio of the monthly salary of Supriya to that of Mohini is 3 : 5. Supriya and Mohini both save 30% and 42% respectively of their monthly salaries r...
80 percent of first number is equal to 70 percent of the second number. What is the respective ratio of the first number to the second number?
The ratio of the two numbers is 7:15. 120% of the first number is equal to the 70% of the second number. Find the sum of both the numbers.
Average run per wicket of a bowler is 11.5. In his next innings bowler took 6 wickets and conceded 48 runs, thereby he reduced his bowling average by 1....
Abdul allocates 90% of his income among his wife, son, and daughter in the ratio of 5:2:1, while saving the remaining amount, which totals Rs. 4,000. Fr...
Number of faculties in Physics and Biology in an institute is in the ratio of 5:8 respectively. If 120 more faculties join Physics, while 64 more facult...
The ratio of the monthly incomes of Dinesh, Nikhil and Rohan is 64:73:81. If Dinesh’s annual income is 10,496, what is Rohan’s annual income...
What number has to be added to each term of 3:4 to make the ratio 6:7?
In an office, the ratio of the number of males to number of females is 7:3. If 2 males joined the class and 5 females left the class, then the ratio of ...
Relevant for Exams:
