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Let the weight of the pieces of diamond be 3x, 4x, 5x, 6x Total weight of diamond = 3x + 4x + 5x + 6x = 18x Price ∝ (weight)2 => Price = k(weight)2 ; where, K is constant Original price = k(18x)2 Price of pieces = (9kx2 + 16kx2 + 25kx2 + 36kx2) = 86kx2 Loss in price = 324kx2 – 86kx2 = 238kx2 which is given as 119,000 => 238kx2 = 119000 => kx2 = 500 Original price = 324kx2 = 324 x 500 = 162000
The respective ratio between the time taken by a boat to travel the same distance downstream in stream A and that in stream B is 7 : 5. The speed of the...
A boat takes 7 hours to cover 245 km upstream and 9 hours to cover 477 km downstream. Find the time taken by the boat to cover 410 km upstream and 495 k...
A boat traveled a distance of 135 km from point 'A' to point 'B' and then returned to point 'A,' completing the entire journey in 54 hours. The boat's s...
A boat running downstream covers a distance of 24 km in 3 hrs while it covers the same distance upstream in 6 hrs. Then speed of the boat in still water is
A man can row 25/2 km an hour in still water and he finds that it takes him thrice as long as long to row down the river. The rate of stream is:
The ratio of the speed of boat ‘A’ in still water, the speed of boat ‘B’ in still water and the speed of the current is 7:5:2, respectively. If ...
The speed of a boat in still water is 6 km/hr more than that of the current. The time taken by the boat to cover 625 km downstream is 12.5 hours. Find t...
Speed of a boat in still water to speed of boat in upstream is 10:7. If the boat can travel 390 km in downstream in 5 hours, then find the time taken by...
A boy can swim in water with a speed of 13 km/hr in still water. If the speed of the stream is 5 km/hr, what will be the time taken by the boy to cover ...
