Question
A is thrice as efficient as B and can finish a piece of
work in 20 days less than B. B can finish this work in how many days?Solution
Ratio of efficiency of A and B = 3: 1
A will take 1/3 of time as compared to B.
Say, B takes 3x days and A takes x days.
∴ 3x – x = 20 ⇒ x = 10
∴ B takes 10 × 3 = 30 days to do the work.
More Time and work Questions
?% of 1499.89 + 54.14 × 8 = 25.05% of 5568.08
? = 41.92% of (34.92 x 40.42) + 29.78% of 399.84
- 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.)
(15.87% of 79.98 + 19.69% of 64.22) × 4.83 = ?
? + 163.99 – 108.01 = 25.01 × 6.98
80.09 * √144.05+ ? * √224.87 = (2109.09 ÷ √1368.79) * 19.89
(15.15 ×  31.98) + 30.15% of 719.99 = ? + 124.34
(124.99)² = ?
6.992 + (2.01 × 2.98) + ? = 175.03
(627.98 ÷ 3.98 + 11.01 X 12.98 - ?) ÷ √623 = (178.98 + 37.08) ÷ 23.98Â
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