Question
A man alone can do a work in 25 days. A woman can complete
half of the same work in 20 days. In how many days can they complete 90% of the work together?Solution
ATQ,
Time taken by the woman to finish the entire work = 20 ÷ 0.5 = 40 days
Let the total work be 200 units. {LCM of (25 and 40)}
So, efficiency of the man = 200 ÷ 25 = 8 units/day
And efficiency of the woman = 200 ÷ 40 = 5 units/day
So, required time = (200 × 0.9) ÷ (8 + 5) = 13.85 days
More Time and work Questions
√323.89  × (3.20) ÷ 9.02 =?
- 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.)
23.98% of 624.99 = 19.98% of ? + 14.98% of 639.99
Direction: Please solve the following expression and choose the closest option
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.)...
- 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.)
12, 16, ?, 36, 52, 72Â
- 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.)
(6859.01)1/3  × 10.11 × 14.47 ÷ 20.32 = ? + 45.022
33.33% of 809.891 + 66.66% of 212.91 = ?
