Question
There were 25 workers to complete a job in 10 days. But
after 4 days, 10 workers were reassigned. How many more days will be needed now?Solution
ATQ,
Assume efficiency of each worker = 'e' units/day
Total work = 25 × 10 × e = 250e units
Work completed in 4 days = 25 × 4 × e = 100e units
Work remaining = 250e - 100e = 150e units
Remaining workers = 25 - 10 = 15
Time needed = 150e ÷ (15 × e) = 10 days
Extra days = 10 - 6 = 4 days
Three numbers are in the ratio 2:5:7. If the difference between the sum of the smallest and the largest number and the sum of the smallest and the secon...
How many 3-digit numbers are completely divisible by 5?
If X + Y = 23 and XY = 126, what is the value of (X)² + (Y)² ?
Sum of squares of three consecutive numbers is 1454. Find the sum of first and third number.
What is the unit digit of 49 15?
- Determine the largest 5-digit number that is divisible by ‘71’:
Identify the number that, when subtracted by its square root, results in a difference of 42.
The difference between a number and its four – seventh is 60. What is the number?
What is the maximum value of (a + b) if '5a346b8' is divisible by 12?
 Â
find the value of this?Â