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Required time = Sum of the lengths of trains / Relative speed Relative speed = 70 + 56 = 126 kmph = (126 × 5)/18 = 35 m/sec Required time = (190 + 160)/35 = 350/35 = 10 seconds
Two pipes can fill a tank in 10 hours and 12 hours, respectively, while a third pipe can empty it in 20 hours. If all the three pipes are opened simulta...
887, ? , 818, 749, 657, 542.
A bag contains 5 red and 3 green balls. Two balls are drawn at random. Find the probability that both balls are red.
Area of a rectangle is 96 m2 When the length of the same rectangle increased by 6 m and the breadth decreased by 3 m, then the area of the re...
96 × 30 – (400 ÷ 5) × 8 = ?.
A and B started a business with investments of Rs. _____ and Rs. 5000, respectively. Six months later, C joined with an investment of Rs. _____. After o...
Simplify the given expression:
6 × 6 ÷ 6 of 6 × 60% of 600
A manufacturer sells an article to a wholesaler at a profit of 20%. The wholesaler sells it to a retailer at a profit of 25%, and the retailer sells it ...
A cuboid has dimensions 12 cm × 8 cm × 6 cm. If a cylindrical hole of diameter 4 cm is drilled through the entire length of the cuboid, what is the vo...
