Let total work = 30 units (LCM of 15 and 10) Efficiency of ‘A’ = (30/15) = 2 units/day Efficiency of ‘B’ = (30/10) = 3 units/day Combined efficiency of ‘A’, ‘B’ and ‘C’ = (30/5) = 6 units/day Efficiency of ‘C’ = 6 – (2 + 3) = 1 units/day Required time taken = (30/1) = 30 days
Sum of the three numbers is 180. Ratio of the first number to second number is 4:7 and the ratio of second number to third number is 7:9. Find the secon...
How many two-digit even numbers can be formed using the digits 3, 4, 5, 7, and 8, ensuring that no digit is repeated?
A five digit number 2A78B, is divisible by 55. What is the difference between the maximum and minimum possible value of (A+B)?
A six-digit number 4c68d2 is divisible by 12. Find the sum of all possible values of 'c' for the largest possible value of 'd'.
Range of the given data 23,19,16,17,21,9,18,6.
How many integers are there between 50 and 600 that are divisible by both 15 and 25?
Sum of squares of three consecutive numbers is 1730. Find the sum of first and third number.
What is the place value of 3 in 3678921410.
1. 3 ×104
2. 3 ×107
3. 3 ×105
4. 3 ×109
Happy and Sad are running on a circular track of radius 245 metres. Happy can complete a round in 200 seconds and the speed of Sad is twice the speed of...
If (3/4)th of a number is subtracted from (5/6)th of that number, then the resultant will be (2/6). Find the number.
