Question
A and B can complete a task together in 26 days, while B
alone takes 52 days to finish it. A began working alone and left after ‘x’ days, after which B completed the remaining work in 39 days. Determine the percentage of the total work completed by A.Solution
Let total amount of work be 52 units
Efficiency of (A + B) = 52/26 = 2 units/day
Efficiency of ‘B’ = 52/52 = 1 unit/day
Amount of work done by ‘B’ = 39 × 1 = 39 units
Percentage of work done by ‘A’ = {(52 – 39)/52} × 100 = 25%
1*1/2 + 11*1/3 + 111*1/2 + 1111*1/3 + 11111*1/3 =?
150% of ? + 280 ÷ 35 = 132 - 122 + 7
120% of 25 + 80 X 2 = ?2 - 6
Solve the following:
240 ÷ 4 × 512 ÷ 8
What should come in place of the question mark (?) in the following question?
2 – [6 – {3 + (–4 + 5 + 1) × 8} + 12] = ?
24 × √? + 4008 ÷ 24 = 40% of 200 + 327
If 960 ÷ 16 + 875 ÷ 25 - x + 28 × 6 = 1350 ÷ 18 × 222 ÷ 37, then the value of x is:
?2 + 114 - 48 ÷ 2 × 5 = 163
30% of 40% of 120% of 3500 = ? × 63
13 X √? + 256 ÷ 4 = 30% of 900 - 50
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