Question
Train X running at a speed of 30 km/hr crosses train Y
in 16 seconds. Find the speed of train Y (in km/hr), if the sum of the length of train X and Y is 400 meters and both trains running in the opposite direction.Solution
Let speed of train Y be 'a' km/hr. According to question, => 16(30 + a) × (5/18) = 400 => 480 + 16a = 1440 => 16a = 960 => a = 60 km/hr
More Profit and loss Questions
Simplify: 3√50 − 2√8 + √18
Simplify: 72 − 18 ÷ 3 × 2 + 5 × 3
(144 ÷ 4)² × (72 ÷ 12)³ = 12 ×? × (25920 ÷10)
20 + 160/? × 20 = 420
10% of 100 + 14 = ?% of 120
25% of 30% of 3/5 of 14500 =?
What will come in place of the question mark (?) in the following questions?
What will come in the place of question mark (?) in the given expression?
75% of (√64 × 8 - 16) × ? = 15²
24 × ?2 – 11 × 4 = 1900
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