Question
A and B can complete a task together in 30 days, while B
alone takes 60 days to finish it. A began working alone and left after ‘x’ days, after which B completed the remaining work in 45 days. Determine the percentage of the total work completed by A.Solution
Let total amount of work be 60 unitsEfficiency of (A + B) = 60/30 = 2 units/dayEfficiency of ‘B’ = 60/60 = 1 unit/dayAmount of work done by ‘B’ = 45 × 1 = 45 unitsPercentage of work done by ‘A’ = {(60 – 45)/60} × 100 = 25%
More Approximation Questions
- Determine the final value of this expression:
(1/5) of {5⁴ - 24 × 14 + 12 × 18 - 10.5 of 10²} 3% of 842 ÷ 2% of 421 = ?
√225 + 27 × 10 + ? = 320
- Determine the value of ‘p’ if p = √529 + √1444
45 % of 180 + √144 * 8 = ?2 + 70 % of 80
Determine the value of 'p' in following expression:
720 ÷ 9 + 640 ÷ 16 - p = √121 X 5 + 6²- 7?2 = √20.25 × 10 + √16 + 32
- What will come in place of the question mark (?) in the following questions?
(2⁴ + 6²) ÷ 2 = ? 18(1/3) + 9(2/3) – 10(1/3) = 1(2/3) + ?
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