Question
Two trains P and Q of lengths 250 m and 400 m,
respectively, are running in the same direction on parallel tracks at 90 km/h and 120 km/h, respectively. How much time will the trains take to cross each other completely?Solution
Length of train P =250m and train Q=400m. Total distance =250+400=650m Speed of trains P and Q =90 km/h and 120 km/h. Speed of trains when are running in the same direction=120-90=30km/h =30Γ5/18=150m/18 sec. = 8.33 m/s Now time =650/8.33 =78sec.
15% of 1800 + 22 = ?Β
What will come in the place of question mark (?) in the given expression?
30% of 520 + 16% of 1500 = ? + 244
- What will come in place of the question mark (?) in the following questions?
(2β΄ + 6Β²) Γ· 2 = ? 4/5 + 6/7 × 14/42 ÷ 24/35 = ?
What will come in the place of question mark (?) in the given expression?
45% of (β6400 Γ 5) = ? + 111Β
If 1.123 Γ 3.211 = 3.122 + ______________, then the number in blank space is
Simplify and express as a fraction in simplest form:
0.75 + 0.4 β 0.125
- What will come in the place of question mark (?) in the given expression?
389 + 641 - ? = 180 X 2 15.8% of 9000 + 20.4% of 7500 = 30% of ?
2.4 of 7.2 of 1/57.6 of 4200 = ?