Question
If person 'A' can complete a task in 35 hours and person
'B' can complete the same task in 40 hours, how much time will it take for both 'A' and 'B' to complete 60% of the work when they work together?Solution
Let the total work = L.C.M of 35 and 40 = 280 units Then, efficiency of 'A' = 280 ÷ 35 = 8 units/hour Efficiency of 'B' = 280 ÷ 40 = 7 units/hour 60% of the work = 280 X 0.6 = 168 units Time taken by 'A' and 'B' working together to complete 60% of the work = 168 ÷ (7 + 8) = 11.2 hours
What approximate value will replace the question mark (?) in the following?
√48...
(16.16 ×  31.98) + 14.15% of 249.99 = ? + 99.34
(239.89 ÷ 3.89) – (144.01 ÷ 5.73) = ?2Â
- 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.)
2.51% of 800 - 3.97% of 250 = ?
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.)...
6940 ÷ 28 ÷ 7 =?
√3601 × √(224) ÷ √102 = ?
1726 1/3 + 40% of 1849.889 + 15.12 × 18.25 = ?
