Question
Train A running at speed of 54 km/hr crosses a platform
having twice the length of train in 12 sec. Train B whose length is 240m crosses same platform in 18 sec, then find the speed of train B ?Solution
Let length of train A = x Length of platform = 2x Speed = distance/time ⇒ 54 x 5/18 = (x + 2x)/12 ⇒ x = 60 m = length of train A Length of platform = 60 x 2 = 120m For train B, Speed = distance/time ⇒ (240 + 120)/18 x (18/5) ⇒ 72 km/hr
Find the simplified value of the given expression:
8 of 7 ÷ 2 × 5² + √36 – 10What will come in the place of question mark (?) in the given expression?
3.6 X 15 + 4.5 X 12 = 40% of (? - 50)Simplify the expression and find the value of 'x'
35% of 500 of 18 ÷ 21 = x
7.4 × 8.2 + 3.5 × 4.5 = ? + 11.5 × 2.5
1 + 1 + 1/2+ 1/3 + 1/6 + 1/4 is equal to ____
What will come in the place of question mark (?) in the given expression?
(144 × 16 ÷ 12) × 6 = ?
What value should come in place of (?) question mark in the given expression.
√324 + √225 × 3 − 5² = ?
What will come in place of (?) question mark in the following expression.
(123 ÷ 62) × 15 - 120 = ?
15 * 12 + 35% of 80 + 70% of 130 = ?
