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Let the speed of the boat in still water and the speed of the current be ‘x’ km/hr and ‘y’ km/hr, respectively Upstream speed of the boat = (x – y) = 75/5 = 15 km/hr Or, 26 – y = 15 Or, y = 26 – 15 = 11 km/hr Therefore, downstream speed of the boat = 26 + 11 = 37 km/hr Required time taken = 111/37 = 3 hours
Find the unknown value of' x' in the proportion $$(5x + 1) : 3 = (x + 3) : 7
? % of 1200 = 20% of 30% of 3600
Find the value of ‘y’ if (2/7) × y = 0.79 – 1.77 ÷ 3.
(6.013 – 20.04) = ? + 9.98% of 5399.98
15.50% of 6240 – 426.31 = ?
Evaluate: (768÷16)×(125÷25)−(81÷9)×12
44.99% of 499.98 × (3.30/7.40)% of 1399.97 + 10.02 = ?
690 ÷ (75% of 460) = ? ÷ (50% of 160)
((1024)n/5 × (42n+1 ))/(16n × 4n-1 ) = ?