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Speed in upstream = 20 – 4 = 16 km/hr Speed in downstream = 20 + 4 = 24 km/hr Required total distance= (16 + 24) × 6 = 240 km
A carriage travelling in fog passed along a man who was walking @ 6 km/hr in the same direction. He could see the carriage for 8 minutes and it was visi...
If a = 55, then what is the value of
If sin 28° = 15/17 , then tan 62° = ?
If 9x2 + 16y2 = 24xy, then find the ratio of ‘x’ and ‘y’, respectively.
If x² + y² + z² = xy + yz + zy (x≠0), then the value of (5x+3y-4z)/2x is
If a + b + c = 5, a³ + b³ + c³ = 95 and abc =15, then find the value of a² + b² + c² – ab –bc – ca
If 4x + 1/3x = 12 then find the value of 9x2 +1/16x2.
