Question
A train takes 8 seconds to pass a
dog running in the opposite direction to the train at a speed of 10 m/s. Given that the train is 400 meters long, determine the train's speed.Solution
ATQ, Let assume the speed of the train is 'p' m/s ATQ; 400 = (10 + p) × 8 Or, 400 = 80 + 8p Or, (400 - 80) = 8p Or, 8p = 320 Or, p = 40 Required speed of the train = 40 m/s
564.932 + 849.029 – 425.08 = 612.095 + ?
999.99 + 99.99 + 99= ?
A sum of ₹60,000 is invested at a compound interest rate of 'x%' per annum, compounded annually, and grows to ₹75,264 in 2 ye...
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
³√? × 33.97 + 59.99 × 28.9 – 48.98 × 21.42 = 1085.344
1279.98 ÷ 40.48 × 10.12 = ? × 2.16
(124.901) × (11.93) + 219.95 = ? + 114.891 × 13.90
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
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