Let, the speed of the current be x km/hr Therefore, speed of the boat in still water = 1.25x km/hr Downstream speed of the boat = x + 1.25x = 2.25x km/hr For I: 2.25x = 810/20 => x = 40.5 => x = 18 Therefore, speed of boat in still water = 1.25x = 22.5 km/hr Therefore, I is false. For II: 2.25x = 810/10 => 2.25x = 81 => x = 36 Therefore, speed of boat in still water = 1.25x = 45 km/hr Therefore, II is true. For III: 2.25x = 810/30 => 2.25x = 27 => x = 12 Therefore, speed of the boat in still water = 1.25x = 15 km/hr Therefore, III is true.
16 4 2 1.5 1 1.875
...92, 51, 21, 13.5, x, 4.25
find the value of (10x + x -5)?
3 4.5 6.75 10.125 15.1875 22.78125 ?
...2187, 1458, 972, ?, 432, 288
11 33 66 112 173 ? .
(45)2÷ ∛729 + (35)2÷ 1.4 =?
(32.03 + 111.98) ÷ 18.211 = 89.9 – 20.23% of ?
The question below is based on the given series I. The series I satisfy a certain pattern, follow the same pattern in series II and answer the question...
140 300 380 420 440 ?
...94 282 284 852 856 2562
...