A man can row 8 km/hr in still water. If the speed of the current is 2 km/hr, it takes 5 hours more in upstream than in the downstream for the same distance. Find the distance.
Speed of man in still water = x = 8 km/hr Speed of current = y = 2 km/hr Let the distance be x km. Now according to the question, Upstream time = Downstream time + 5 => x/(8-2) – x/(8+2) = 5 => x/6 – x/10 = 5 => [(5x - 3x)/30] = 5 => x = 75 km
60 = (? x 10 + 250)/5
∛857375 + ∛91125 = ? + √6889
?/4 ÷ 9/? = 15% of 800 + `1(2/3)` × `1(1/5)` × 1/2
6 × 1.8 × 0.25 × 70 = ? + 9.5
(1/2) – (3/5) + 3(1/3) = ? + (5/6)
140% of 9/8 of ? = 108% of 2800
√324 + √576 = ?/ √9
√3600% of 150 + 3/5 of 360 - ? = 210
18, 25, 33, 42, 52, 63, ?
