Question
A, B, and C each have different rates of completing a
task; A can finish it in 36 days, B in 60 days, and C in 30 days. Initially, they begin the work collaboratively, but C departs after 5 days. Furthermore, A exits the job 18 days before the final completion. How long does it take to complete the entire task?Solution
Let the total work = 180 units (LCM of 36, 60 and 30) Amount of work done by A alone in one day = 180/36 = 5 units Amount of work done by B alone in one day = 180/60 = 3 units Amount of work done by C alone in one day = 180/30 = 6 units Amount of work done by A, B and C together in 5 days = 5 × (5 + 3 + 6) = 70 units Amount of work done by B alone in 18 days = 18 × 3 = 54 units Remaining work = 180 – 70 – 54 = 56 units Time taken by A and B together to complete 56 units work = 56/(5 + 3) = 7 days So the total time taken to complete the work = 5 + 18 + 7 = 30 days
 (108.999)² - (102.001)²=?
24.912% of ? – 35.06% of 199.91 = 19.97% of 224.89
A sum of ₹60,000 is invested at a compound interest rate of 'x%' per annum, compounded annually, and grows to ₹75,264 in 2 ye...
`sqrt(7.987 X 24.790 +199.991)`
15.15% of (150.50 + 249.50) + 8.08³ - (10.10 of 5.05) = ? of (75.75 - 25.25)
149.78% of 319.87 – 199.83% of 45.45 = 130.03% of (? × 12.01)Â
The monthly savings of three individuals 'P', 'Q', and 'R' are such that the average savings of 'P' and 'Q', 'Q' and 'R', and 'R' and 'P' are Rs. 2,000,...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
{1722.95 + 5.05 × 648.08 – (2728.06 ÷ 22.05)} = ?Â
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
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