Question
The speed of the stream is 12 km/h. Boat ‘A’ covers
100 km distance against the stream in 5 hours and boat ‘B’ covers 80 km distance against the stream in 2 hours. The speed of boat ‘B’ in still water is how much percent of the speed of boat ‘A’ in still water?Solution
Speed of boat ‘A’ upstream = 100/5 = 20 km/h Speed of boat ‘B’ upstream = 80/2 = 40 km/h Speed of the boat ‘A’ in still water = 20 + 12 = 32 km/h Speed of the boat ‘B’ in still water = 40 + 12 = 52 km/h Required percentage = (52/32) × 100 = 162.5%
20.22 × 11.99 + 140.15 = ?
Amit and Bheem can individually finish a task in 10 days and 15 days, respectively. If they work together to complete the task an...
In a village election, 300 votes were declared invalid. The winning candidate secured 60% of the valid votes and won by a margin of 1,500 votes. Find th...
(74.93% of 640.11 + 3/4 of 359.79)² - (1/3 of 80.87 × 2)² = ?
[(120.96 × 12.09) ÷ ?] ÷ 6 = 19.96% of 55.07
620.15 + 1279.98 + ? × (4.79)2 = 149.95% of 1600.14
(8.86)² × (15.01)² ÷ √624.99 = 9?
(√360.99 + 161.14) ÷ 5 × 249.98 = ?
420.11 ÷ 13.98 × 5.14 – 124.9 = √?
