When travelling downstream, a boat takes 5 hours to travel 300 km. If the speed of the stream is (2/5)th of downstream speed of the boat, then find the time taken by the boat to cover 360 km in still water.
Downstream speed of the boat = 300/5 = 60 km/hr Speed of the stream = 60 x (2/5) = 24 km/hr So, speed of the boat in still water = 60 – 24 = 36 km/hr Required time taken = 360/36 = 10 hours
583.9 + 1519.98 - 445.21 = 1150.011 + ?
1219.98 ÷ 30.48 × 15.12 = ? × 2.16
416.021÷ 3.782 + 13.012× 24.987 =?
...(√ (5475.5) +√ (1024.2)) -√ (4095.8)÷ (√ (143.9)× √ (15.678)...
√1567.763`xx` √4400 ÷ 326.9827 + 1223.293 = ?
386.99 + 397.99 + ? - 232.02 = 35.02 × 31.99
19.22 × 11.99 + 142.15 = ?
?² × 55% of (29 + 32 - 41) = 41.66% of 216 + 9
(44.11/4.01) + (11.99/3.03) + 23.9% of 49.978 = ?3.03
