A train 275 metre long takes 33 sec to cross a man running at a speed of 5 km/hr in the direction same to that of train. What is the speed of the train?
Let the speed of the train be x Relative speed = (x - 5) km/hr ⇒ (x - 5) = (275 × 18)/(33 × 5) ⇒ (x - 5) = (4950)/(165) ⇒ x – 5 = 30 ⇒ x = 30 + 5 = 35 km/hr
375% of 320 - 80% of 40 ÷ √256 = ?
√? = 80% of 720 - 22% of 2500
9999² + 1111² =?
What is the value of 143 + 163 + 183 + … + 303?
45% of 360 - 160 + ? = √324
Find the value of {(3125) (n/5) × 5 (2n + 2) }/ {25 n × 5 (n - 1) }
263 + 1152 - ? + 577 = 1333
? + 156 ÷ 3 × 7 = 35% of 400 + (13)2
(72 + 30) ÷ 6 + [{75 ÷ 25) + 6} × 2] = ?
34 × 2.5 + 6.4 × 1.5 – 4.8 × 1.2 =?
