Efficiency of A is 25% more than B and B takes 30 days to complete a piece of work. A started the work alone and then B joined him 4 days before actual completion of the work. For how many days A worked alone?
Efficiency Ratio = A : B = 125 : 100 = 5 : 4 Days Ratio = A : B = 4 : 5 B takes 30 days to complete a piece of work. => 5’s = 30 => 1’s = 6 => 6’s = 24 So A can complete the work in 24 days. Total units of work = 120 (LCM of 24,30) A = 5 unit B = 4 unit A and B worked for 4 days = 4 × (5+4) = 36 units Remaining work = 120 – 36 = 84 units Hence, A worked alone for = 84/5 days.
44.87% of (39.85 × ?) – 1520.88 0.51 = 1400.8
13.96% of (141.17 + 158.85) + 7.95³ - (6.88 of 9.07) = ? of (58.06 - 13.02)
24.99 × 32.05 + ? - 27.01 × 19.97 = 29.99 × 27.98
(7.992/√?) + √16/? = 14.032/?
33.33% of 179.99 = 29.98% of 199.98 - ?
(14.56)² × √840 =?
...(3/5) of 3025 + (18² + 12²) = ? + 22.22% of 1125
6.992 + (2.01 × 2.98) + ? = 175.03
1219.98 ÷ 30.48 × 15.12 = ? × 2.16
